Best Rechargeable 9-Volt Battery | A Source of Uninterrupted- Power

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A rechargeable battery is often synonymous with energy efficiency. And nowadays, 9-volt batteries are almost everywhere. As a matter of fact, they are the most common type of battery. The reason is that they were first introduced for the earliest transistor radios.

Comparing with single-use batteries, they do have the ability to save you a lot of money. Also, using them can save hundreds of dead batteries from making their way into landfills.

If you like clean energy or care about the environment, rechargeable batteries are always a fantastic option. Since we’re going to talk about the best rechargeable 9-volt batteries here, I’ll mention all the good bits in the writeup. 

They are not hazardous, can be used over and over again, and they have a lot of applications. To name a few, you can use them in tv-remote, smoke detectors, gas detectors, clocks, walkie-talkies, electric guitars, and effects units.

What is a Rechargeable Battery and What are the Benefits of Using One?

Rechargeable battery goes by many names. For example, they are also known as storage batteries or secondary cells, or more archaically, accumulators. It can be charged, discharged into a load, and recharged many times. 

It’s made of several electrochemical cells which accumulate and store energy through a simple reversible electrochemical reaction. Anyway, they are available in different shapes and sizes, ranging from button cells to megawatt systems connected to stabilize an electrical distribution network.

These batteries can also be different in nature due to different combinations of electrode materials and electrolytes. For example, lead-acid, zinc-air, nickel-cadmium (NiCd), nickel-metal hydride (NiMH), lithium-ion (Li-ion), lithium iron phosphate, and lithium-ion polymer.  

Before describing the benefits, it’s better to know a little about their applications. These are mainly used in IoT devices. And these devices are designed with a battery life of over 3, even 5 years of stand-alone work. They are often low-powered and require very little maintenance.

This is exactly where rechargeable batteries shine. You can easily charge them with a simple charger that doesn’t cost much. Also, they use nominal voltage for the whole operation state. While on the other hand, disposable batteries start at 1.5 volts and slowly decrease when discharged.

Not to mention, using them can save you a lot of time. How? Well, since you can recharge them, there’s no need to make trips to the shop over and over again. Besides, if you care about our mother earth, you’ll be glad to know that these are very much so the environment is friendly.

Do you know that around 15 billion batteries are thrown away every year? They end up in landfill sites and release damaging chemicals. If you choose to use even one rechargeable battery, you would be stopping 1000 disposable batteries from going to landfills. Crazy stat, right?

Speaking of which, rechargeable nickel-metal-hydride (NiMH) batteries are better for the environment than nickel-cadmium (NiCd). However, the Energizer Rechargeable 9V Batteries (NiMH) are by far the best in this case. Not only they are durable and powerful but also help to keep the soil less contaminated. 

Rechargeable batteries save you money. Yes, the initial cost might be higher but you can make a good amount of saving as you can recharge and use them up to 500 times(in some cases over 1000). Still not getting the whole picture? 

Well, let me put that into a better perspective: the average household has an average of 25 battery-powered appliances. How many do you have? Do the math. I’m pretty sure you’ll be surprised to see how much dough you can save. 

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Our Best Picks for Best Rechargeable 9-Volt Battery

So at this point, you’re probably well aware of the benefits of using rechargeable batteries I hope. Since they become more and more common over time, a lot of companies have turned into manufacturing these.

Hence, there are plenty of brands available for you to choose from. While this availability offers you freedom of choice, it can also overwhelm you at the same time. To eliminate such anomalies, I went ahead and picked five great rechargeable batteries that can do the trick for you. 

With that said, let’s jump straight into our first product.

1. Amazon Basics 4-Pack 9 Volt Cell Rechargeable Batteries

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Let’s start nice and clean with eco-friendly Ni-MH batteries from Amazon Basics. These 4-Pack 9-volt Cell Rechargeable batteries are guaranteed to last longer. You can recharge it more times over their life spans, and still have higher capacities than those made with NiCd.

I personally prefer Ni-MH over NiCd batteries. They are designed to be recharged hundreds of times. It makes them equivalent to hundreds of alkaline batteries in total service over their lifetime. If I had to use a number, I would say they can function for at least up to 5 years. 

So, where does this one stand? Well, first of all, it comes fully charged and ready to use. I always think it’s convenient to have two sets of batteries at your disposal. When one set runs out of charge, you can immediately use the other set. In the meantime, you can recharge the first set and keep them for future use.

Now, you could say…what if I don’t use the other set of batteries, would they die? Well, they can retain their power for up to 1 year. So, no.

Anyway, I wasn’t joking when I said in the beginning that using one rechargeable battery can prevent 1000 disposable batteries from contaminating our soil. This 9-volt Ni-MH battery from Amazon Basics can be recharged 1000 times with minimal power loss. 

Energy Star certified it can maintain 80% capacity for over 2 years. Having an extremely long battery life, it’ll save you from the trouble of changing battering in short intervals. On the other hand, their self-discharging rate is very low and gradual. It’s not steep like the other cheap rechargeable batteries.

As for the application, you can use it with any device that takes a 9-volt battery. However, the best application for Ni-MH batteries like this 4-Pack from Amazon Basics is wherever there’s high energy consumption. You can use it for digital cameras, flashlights, and toys, etc.

Conversely, you will not get the maximum outcome of these batteries in a low-energy consummation or stand-by device such as smoke alarms. Ni-MH batteries self-discharge about 1% per day. So, mathematically it’ll only last about 90 days before requiring a recharge.

Speaking of recharging the batteries, you can use Amazon Basics Ni-MH AA & AAA Battery Charger With USB Port for Rechargeable Batteries. This is quite versatile, doesn’t overheat, comes with a USB port for charging smartphones, PDA, iPod, and other handheld devices. Not to mention, this is also travel-friendly.

So, if you’re on a trip, having both Amazon Basics 4-Pack 9 Volt Cell Recharger Batteries and Charger will supply power for all of your devices.

What I Like about this Product

It comes pre-charged and ready to use. A perfect option for using in household devices as the charge last longer than other cheap rechargeable batteries. They are good medium-temperature batteries that don’t have a memory effect.

What I Don’t Like

You can’t use them in stand-by devices like smoke alarms. The charge will deteriorate quickly.

2. EBL 4 Bay 9V Lithium ion Battery Charger with 4 Packs 600mAh 9V Li-ion Rechargeable Batteries

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EBL Mall is one of the leading battery and charger manufacturing companies in the world. The reason behind their popularity is because their products have a reliable battery lifetime, improved rechargeability, and stability.

The EBL 4 Bay 9V li-ion battery comes also with a charger that is a bang for the buck. Just like the batteries, EBL chargers are also quite popular among customers. They have multiple slots to charge several batteries simultaneously and very capable charging performance.

So, both the batteries and the charger constitute a nice ecosystem of their own by supporting each other conveniently.

Let’s talk a closer look at its nature. The average Li-ion battery usually has long service life than other batteries. Using fast-charging batteries like EBL 4 Bay means less downtime for a machine while it’s attached to a charging station. You don’t have to wait around anymore.

Not to mention, these batteries don’t pose any threat to the environment. It’s nice to see that these days people are leaning more and moreover clean energy rather than fossil fuel alternatives.

Just like Energizer Rechargeable 9V Batteries, this one is embedded with zero memory effect. Therefore, it offers better capacity and an improved ability to hold a charge while standing by. Even if it’s partially charged, it’ll not show a memory effect.

Speaking of charging, you can charge this 1200 times! When they run out of power, simply use the EBL battery charger. It’s a new 6F22 model and USB powered. It comes with a USB cable but no 110V plugin supply transformer though. With this, you can charge up to 4 pieces simultaneously. 

What surprised me, in a good way, is that the charger automatically shuts down after the batteries are fully charged. It also uses the MCU control technology which provides a constant current and constant voltage safety model.

Musicians! Listen up my friends, if you’re struggling with powering up the pedals for your guitars, then you need this. As it happens, many guitarists tend to leave the pedals plugged in and that eventually kills the batteries.

But these 6F22 9V 600mAh rechargeable li-ion batteries from EBL will hold a charge for a long period. And if you leave them plugged in, you can just recharge them and have the backups ready to go. You’ll save a considerable amount of money, trust me.

Besides that, you can use these bad boys with literally any electronic portable or static devices that are compatible with 9V batteries.

The Bright Side of EBL 4 Bay 9V Lithium ion Battery

It features 600mAh rechargeable lithium-ion batteries which offer a longer shelf life. The design is compact and it’s easier to just carry them wherever you go. Charging them is also easy since it has a micro USB cable.

The Dark Side

The charger, however, is not universal and you can use it indoors only.

3. Energizer Rechargeable 9V Batteries, NiMH, 175 mAh, Pre-Charged, 1 Count (Recharge Universal)

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This is another Ni-MH rechargeable battery from Energizer that just keeps on giving. Energizer is a veteran in this area and they’ve been manufacturing durable batteries for a long time. Just like any Ni-MH battery, you can also use this one over and over. So, why keep paying hundreds of dollars extra when you can simply buy these once?

These are the world’s first AA/AAA rechargeable batteries made with 4% recycled batteries. It’s the culmination of environmental responsibility and inspired technology. The world has looked after us for more than 200,000 years. It’s time we look after it.

Only the right build can provide quality service. That’s exactly why Energizer took it a bit further with its advanced manufacturing process.  It sees to the matter that there are no quality defects.

So, when you’re bringing this to your humble abode, you’re actually bringing a product that’s nothing but reliable. Besides, it’ll offer a consistent user experience for an extended period of time. What more can you expect from a top-tier battery like this, right?

The Energizer Rechargeable 9V Batteries are infused with advanced technology that minimizes both self–discharge rate and aging effects. So, on the whole, it gets an extended life than other batteries on the market. This durable composition ensures up to 5-year usable battery life under typical usage patterns.

The engineered alloy makes sure the electrode composition is optimized at a maximum rate. That’s why it provides a much-needed ideal balance of capacity, cycles, and charge retention. So, not only each battery can be charged hundreds of times but also it can last up to 12 months in storage. 

Just one full charge will allow your kids to enjoy up to 5.5 hours of toy activity. Now, imagine using one-time-use batteries and having to change them every week. Also, with one charge you can have 8 hours of service on your handheld gaming device.

I’ve mentioned just those two for putting things in perspective. So, what are the devices that you can use with these batteries from Energizer? Actually pretty much any IoT device that is compatible with a 9-Volt battery. You can use these for digital cameras, handheld GPS devices, wireless gaming systems, and many more.

Thinking about going on a trip? With this battery and the right charger, your trips can get even joyful. Take hundreds of photos without worrying about the charge. It goes the same about your flashlights, smartphones, or GPS devices. 

The Positive Sides of this Battery

It also comes pre-charged. So, if you’re in a pickle you can immediately unbox and use it. On the other hand, they last longer and the deterioration rate is very gradual and slow.

The Negatives

As it happens with the Ni-MH batteries, you can use them on smoke detectors. Since when they are used in standby devices, they self-discharge 1% per day.

4. Bonai Rechargeable 9V Batteries 600mAh, (4 Pack) Lithium Batteries, Long-Lasting & Economical

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All the batteries that I’ve mentioned so far are fine but they’re not suitable for high drain applications. But Bonai Rechargeable 9-V Lithium Batteries are a game-changer. Perfect for such applications, this is also very durable and holds the charge for a long time.

Lithium batteries like these enjoy a considerable amount of popularity since they were first introduced back in the 1990s. Apple uses them in all of its products. 

This 4 pack lithium battery from Bonai has solid construction. You normally won’t see this kind of quality in other batteries. Corrosion-resistant steel has been used to prevent any sort of leakage. So, yes…the design is quite safe.

They also last longer than their competitors. If it’s been used carefully, it could last anywhere from 1000 to 1200 cycles. Even after completing the maximum amount of cycles, it can still perform at up to 80 percent capacity for more than 3 years. 

As for charging, it doesn’t take much time to be fully charged. Bonai Rechargeable 9V 600 mAh batteries are one of the fastest charging batteries available. They can be charged back up to 100 percent capacity at an astonishingly quick rate compared to other batteries.

But again, it’s always convenient to have two sets of batteries. You charge one set use the standby set. And you can repeat the process over and over again. 

One more thing is that cold weather can drain the battery life of many devices. Bonai’s 9V lithium batteries shine in cold temperatures. So, if you plan on using your device outside or in colder conditions, using these batteries will certainly help you combat the cold zap that affects other batteries on the market.

Just like the previous three brands, this one also has no memory effect and a pretty impressive low self-discharged rate. Hence, you can use them for a longer period of time without having to recharge them daily.

Now in the beginning I said, this is the perfect choice for devices that have a higher rate of charge drainage. You can use this without any worries for smoke alarms, metal detectors, professional audio recording devices, toys, guitar pedals, medical devices, and many more.

Features that Make This Great

This has every feature that a capable battery should have. But what impressed me most is that you can use it in cold environments too. Besides, it has nice build quality with multiple protection layers and an ultra-low self-discharge rate.

Some of the Downsides that Bummed Me Out

I know I went plural with the title but there’s only one aspect of Bonai’s rechargeable batteries that bothered me.  And that is the size. These batteries are larger than regular 9-volt batteries. So, in some cases, you might not be able to fit these in.

5. REACELL USB Charging 800mAh 9V Lithium PP3 Rechargeable Batteries (2 Pack)

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This is another decent 9-volt rechargeable battery that’s capable enough to meet all your devices’(compatible) needs. It has good charge capacity, secure build, and an impressive quick charging capability. But what makes REACELL stands out from its competitors is its ‘protection’ features. We’ll get on to that in a moment. 

Right off the bat, it’ll save a lot of money and resource. Just a single REACELL USB 9V rechargeable lithium-ion battery is equivalent to 1200+ alkaline disposable 9V batteries. Yes, they will give that many cycles. Now, imagine going to the store buy every time your alkaline batteries run out of power.

It has one more good outcome. You can stop a huge amount of non-rechargeable batteries from going to landfills. And you don’t just use one battery right? If you even use 25 electronic devices (average) in your household that require batteries, think how big of a difference you could make…both environmentally and economically.

However, it’s not a surprise. Rechargeable batteries are adored for being amicable towards the earth. But what impressed me most about this product from REACELL is how safe it is. 

To start with, they support temperature protection. Well, over-temperature, whether due to over current, over-voltage, short-circuit, over-charge, or even over-discharge can lead to thermal runaway. It can result in a battery fire or even a catastrophic explosion. 

Thanks to REACELL’s advanced technology, its batteries are well protected and safe. Hence, your devices will be in much safer hands. 

Not only they are safe but they are incredibly convenient also. For instance, they don’t take much time to be fully charged. They’re equipped with advanced USB quick charge technology. It will take you not more than 1.5 hours to fully charge them via a Micro USB cable.

The cable, however, does not come with the package. Also, the standard voltage of all brand’s 9V lithium-ion rechargeable batteries is 8.2-8.4-volts when fully charged. Moving on, REACELL took the guessing game out of the equation with a simple LED indicator that shows a red light while charging and a green light when your batteries are fully charged. Nice!

Now, I might sound like a broken record but I’m going to say it again: lithium cell is much stable than Ni-MH battery. When you get a stable battery that has 800 mAh high capacity, that’s a bingo! You can use this one for smoke detectors, walkie-talkies, wireless microphones, multimeters, and many more.

What I liked Most 

To be honest, there’s a lot to like about this product. But if I’m forced to pick only two of them, I would say they are safety features and fast charging ability. I haven’t come across many batteries that ensure both of them.

What I Didn’t Like

The only thing that bummed me out is that it doesn’t include the charging cable. It didn’t make any sense to me. But you can always just buy one from the nearest store and they don’t cost much either.

How to Choose the Best Rechargeable Batteries for Your Devices?

What you need to understand first is that buying rechargeable batteries is an investment. You can use them over and over for hundreds of hours. While doing so, they can maintain their stated capacity and stay charged between usage.

However, getting the right ones for your needs might be a little tricky. To save you from that trouble, I will try to discuss some of the crucial matters that you shouldn’t overlook while purchasing one. So, please read on to find the best possible rechargeable battery for your devices within your budget.

How to Choose the Best Rechargeable Batteries for Your Devices

The Batteries Have to be Compatible with Your Devices

You can use them on most IoT devices. As long as you have such devices you can use them. But if your appliance requires more power, let’s say 9 volt+ then you should buy other AA or AAA batteries. Anyway, you can use these 9-volt rechargeable batteries to power many devices.

They are most commonly used in smoke alarms, smoke detectors, walkie-talkies, transistor radios, test and instrumentation devices. Not only that but you can also use them in LCDs and other small portable appliances.

Perfect for toys and other wireless gaming controllers, they also have important applications as well. For instance, patient monitors, monitoring devices, emergency beacons, data recorders, surgical lighting use 9-volt batteries. So, yes…they are widely compatible. But even so, you would want to check your device’s voltage requirements.

What Type of Battery You Want?

Most rechargeable batteries are made from nickel-cadmium (NiCd), Lithium Cadmium(LiCd), or Nickel-Metal-Hydride. But with the introduction of Lithium-ion, the game has changed overnight. 

In this article, I’ve listed three Ni-MH batteries from Amazon Basics, EBL, and Energizer. Among the other two, one is a lithium battery from Bonai and the other is a lithium-ion battery from REACELL.

All of these have their own perks. But if you want to go with any NiCd batteries from the market, you have to keep in mind that, they have a significant amount of memory effect. Their battery life tends to decrease when recharging the battery before it’s fully worn out.

On the other hand, Ni-MH batteries are a gem. They have literally zero memory effect and can be charged anytime. But the only problem with this kind of battery is that you cannot use them in standby devices like smoke alarms or flashlights. When they remain idle they discharge faster. They’re a fine option for devices that have high-draining power. 

But what if you want to use them on standby devices? In that case, a lithium-ion battery will be the perfect option. Take REACELL USB Charging 800 mAh 9V for example. This is by far the best rechargeable 9-volt battery that I’ve come so far.

It doesn’t have a memory effect, and they can hold their charge for months at a time regardless of when you charge them. So, ultimately your choice will depend on your needs.

Consider Battery Life

Basically, I’m talking about how much energy your battery can store. It’s the mAh number. Essentially, this is a measurement of how much energy the battery can hold. Additionally, it indicates how long a device will last before it needs to be recharged.

As a matter of course, mAh consumption varies with the type of battery. There is only one thing that you have to understand: batteries with higher mAh ratings can store more energy. For instance, digital cameras and LED flashlights, which use more power than remote controls, will drain batteries more quickly.

Look for Safety Features

It’s always wise to buy ‘protected’ batteries. They are your safest bet. How can you tell whether a battery is safe or not? It mainly has to do with their build quality. Most of the battery manufacturers make sure their products are made with quality materials.

Take Bonai Rechargeable 9V lithium batteries for example. It uses corrosion-resistant steel to prevent any sort of leakage. But what about intrinsic safety features that keep the hazardous incidents out of the door? In this case, the REACELL USB Charging 800 mAh 9V Lithium Rechargeable Batteries shine.

They support temperature protection, over-discharge protection, over-charge protection, short-circuit protection function, and many more. Other batteries also provide safety features but they are at least not as thorough as REACELL.

Carefully Choose the Charger

A good charger is always considered a good friend. With the right charger, your batteries will last longer than you can imagine. Anyway, there’re two charging processes. One is called Timer Controlled and the other is called Smart/Intelligent Charging. As for chargers, there are many. Such as Rapid chargers, Ultra-Fast Chargers, Trickle Chargers, Solar Chargers, etc.

So, what should you choose? To answer that, first, you have to decide what type of charging process you want for your batteries.

When you charge your batteries using a ‘Timer Controlled’ charger, your batteries will all stop receiving a charge at the same time. When the pre-set unit is reached, it will shut off completely. It can’t detect the amount of charge each battery requires.

Although they’re pretty cheap in the long run, they’re really not the best option to go with. On the other hand, Smart chargers can detect the amount of voltage or power that each battery sill might have within it and replenishes the depleted amount of power for each individual battery.

On the whole, look for a charger that is reliable and most importantly utilizes a CC/CV (constant current, constant voltage) algorithm. 

Wrapping it Up

I’ve tried to cover all the basics about the best rechargeable alkaline batteries you can find. The reason behind their popularity is that they are way more efficient than alkaline batteries. Also, they are way more convenient than them.

I mean, you don’t need to rush to the store every time your batteries run out of power. Simply charge and use them again. It saves us both economically and environmentally. Just imagine how many alkaline batteries you can stop from releasing dangerous chemicals to our soil.

From a philanthropic point of view, you can get enough of these modern-day rechargeable batteries. I know I said it in the beginning and I will say it again: the world has taken care of us for more than 200,000 years. It’s high time we did something about it. 

Let’s end with a simple calculation. A recent study has shown that a household of just two people can have anywhere from 20 to 60 batteries in use at any time. If you use rechargeable batteries, you could stop 240,00 to 720,00 alkaline batteries from going to landfills. Crazy number, right?

So, if you want to return the favor to mother earth, you could at least start using these rechargeable batteries. It’ll save you a substantial amount of money and a lot of trouble as well.

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