Top 8 Best 9V Batteries for Your Devices (Review and Buying Guide)

If you are looking for a replacement for a Nicad Battery that does not contain toxic cadmium, this battery is the most suitable. Ideal for testers, RC transmitters, as well as other high-tech devices.

You might feel a bit of sticker shock spending almost twenty bucks on two batteries. Nickel-metal Hydride (or NiMH) batteries like this Energizer 9V battery do have a high initial cost. Since you can recharge them hundreds of times, though, they’re economical in the long run.

NiMH batteries have a lower capacity and a faster recharge rate. They’re designed more for short-term, high-power applications than long-term use. They’re ideal for electronic gadgets like remote control cars and drones, but not the best choice for something like a smoke detector.

You can get higher capacity for less money if you go with a Li-ion cell instead. If you want your battery to charge in a snap, though, you’ll want these Energizer NiMH 9v batteries.

Pros:

Fastest charging time (as low as 15 minutes to full)
Contains no toxic substances like cadmium
Slim and sized to fit even tight battery compartments
More recharges than other types of battery
Efficient and even power discharge.

Cons:

High per-battery cost
Won’t last as long per charge as other designs
Doesn’t hold the charge well in storage

2. BONAI Li-ion Rechargeable 9V Batteries

BONAI Li-ion 9v Rechargeable Batteries

User Rating: 4.3

BONAI Li-ion 9V Rechargeable Batteries are a perfect choice for household devices like metal detectors, smoke alarms, toys, guitars…

A li-ion battery like this one from Bonai is a great choice if you want a long-lasting battery. You can recharge these batteries up to 1,200 times. Since each charge will last almost as long as a typical disposable battery, that makes them a very economical option.

The per-battery cost of this 4-pack is high compared to alkaline batteries. That initial cost goes up since you’ll need to buy a charger, which costs around $10.

The performance is worth the cost for most people, though. This is especially true if you’re powering things like guitar pedals that can eat through other batteries. In our opinion, this is one of the best 9v batteries for regular high-power use.

BONAI 9V 6F22 Rechargeable Batteries.

Pros:

Can withstand more recharges than most 9-volt batteries
Efficient with a low self-discharge rate
Great option for products with a high power drain
Multiple layers of protection against overcharging
Eco-friendly and safe design

Cons:

Will have to buy the charger separately
Not the best option for long-term storage

3. EBL Li-ion (6F22) 600mah Rechargeable 9V Battery

EBL Li-ion (6F22-9V) 600mah Rechargeable Battery

User Rating: 3.8

With no memory effect, low self-discharge, recharge up to 1200 times, this is the best choice for lithium-ion rechargeable battery.

If you’re looking for the most affordable option in rechargeable batteries, check out these lithium-ion batteries from EBL. They’re durable, too – you can recharge them over a thousand times before they wear out. This makes them a great long-term value in addition to the low initial cost.

EBL 9 Volt Rechargeable Batteries Lithium-ion 9V 600mAh Li-ion Batteries (4-Packs).

EBL designs their batteries to be rugged. They have interior safeguards against overcharging and power surges. The discharge rate of these batteries is low, too. This makes them great batteries for smoke detectors. With low use, they can last years between charges.

The only possible complaint about this battery is that it is a smidge larger than the typical 9-volt. If the battery compartment of your device is tight, these batteries might not fit. Otherwise, though, they’re an affordable and powerful rechargeable option.

EBL 9V battery can maintain 75% of capacity after 3 years of non-use.

Pros:

Best value for a rechargeable battery
Can be charged up to 1,200 times
Low self-discharge (lasts up to 3 years in storage)
Built-in protection against overcharges and short-circuits
Works well even in hot weather

Cons:

Are slightly larger than a typical 9V battery
Takes 5+ hours to charge them

EBL 6F22 9V battery charger and 600mAh batteries unboxing, review and test

4. Keenstone Li-ion Rechargeable 9v Battery

Keenstone Li-ion Rechargeable 9v Battery

User Rating: 4.3

Keenstone is another option for li-ion battery, higher capacity, environment friendly and affordable.

Getting the batteries and charger together as a set is a convenient option. You know they’ll work together seamlessly, first of all. It’s also usually a bit less per piece when you buy a whole set.

In this case, you’ll get six rechargeable 9V batteries along with the charger. The batteries have a relatively high capacity and can be recharged about 500 times. They are not the most durable or most powerful, but they’re dependable and give plenty of juice for most home needs.

Considering how much you’re paying for this set, the charger feels a bit cheap. It does the job well and relatively quickly. You can find the same design of charger for about half the price from other brands, though.

9V Rechargeable Batteries 800mAh 6 Pack with Keenstone 9 Volt Battery Charger.

Pros:

Includes charger
Batteries work in both hot and cold weather
High power capacity
Versatile across devices and uses
Holds charge well even when stored
Fast recharge rate

Cons:

Highest cost option on the list
Charger feels a bit cheap for the price

Keenstone lithium-ion battery has multiple protection mechanisms.

5. Maxlithium (ML9v4B) 800mah Lithium Ion Rechargeable 9V Battery

Product Title: Maxlithium 800mah Lithium Ion Rechargeable Battery User Rating: 4.3 Review Snippet: With capacity of 800mah, this battery is ideal for fire detector,wireless microphone, medical device, toys, remote control,etc. Full Review

The Maxlithium option includes a charger and comes at a more affordable price point than the Keenstone set. These batteries offer a fast charging time, reaching full capacity in under 3 hours, making them excellent for frequent battery users. Their relatively high capacity also makes them suitable for high-powered devices like power tools and outdoor equipment.

The main drawback is their lifespan of about 300 charges, which is less than some other rechargeable options. Additionally, the included charger might not be the most robust.

9v Batteries Rechargeable Li-ion 800mAh 4 Packs.

Pros:

Comes with the compatible charger
Can charge 3 batteries to full in just a couple of hours
Low self-discharge (less than 1% every month)
Relatively high capacity
Works at temperatures as low as -4°F

Cons:

Batteries will only last for about 300 charges
The charger isn’t the most sturdy or durable

Battery Inside

6. Duracell Procell (PC1604) 9V Alkaline Battery

Product Title: Duracell Procell (PC1604) 9 Volt Alkaline Batteries User Rating: 3.9 Review Snippet: Choosing Duracell batteries for your household devices is a good option because of their quality and low cost. Full Review

Duracell is a well-known and trusted brand in the battery industry, and their Procell line offers reliable and affordable disposable alkaline batteries. Priced at under $20 for a dozen, they are a cost-effective option for many devices.

While their capacity is among the lowest of the reviewed non-rechargeable batteries, they provide a consistent and strong charge suitable for industrial and household use. However, frequent use might lead to higher long-term costs due to their non-rechargeable nature.

Energizer E522 9V Battery Test

Pros:

One of the lowest per-battery costs on the list
Fits standard 9-volt battery slots
Professional-grade housing and build
Resist leaking and corrosion
Rated for home or industrial use

Cons:

One of the lowest capacities on the list
Non-rechargeable
Won’t stay good as long in storage

7. Energizer E522 Alkaline 9V Battery

Product Title: Energizer E522 9V Alkaline Battery User Rating: 3.6 Review Snippet: With alkaline technology, Energizer E522 is best for everyday electronics. Full Review

Energizer’s alkaline 9V batteries offer a balance of quality and affordability, typically costing less than two dollars per battery. They are a reliable choice for everyday electronic devices.

However, their shelf life is around 5 years, which is shorter compared to some other options. While they provide sufficient power for most applications, their overall capacity is relatively low for a non-rechargeable battery. Energizer’s PowerSeal technology ensures leak-free operation.

Pros:

Perfect battery to use in everyday devices
Sized to fit into all standard battery slots
Durable metal jacket
No added harmful chemicals or special disposal needed
Uses PowerSeal technology for zero leaks

Cons:

Relatively short sitting shelf-life of 5 years
Fairly low overall capacity for a non-rechargeable battery

8. Energizer (L522) Ultimate Lithium 9v Battery

Product Title: Energizer (L522) Ultimate Lithium 9v Battery User Rating: 4.2 Review Snippet: You never lost energy if choosing this battery for your digital camera, smart home devices,handheld games,etc. Full Review

The Energizer Ultimate Lithium 9V battery stands out for its exceptional performance in extreme temperatures, making it ideal for year-round outdoor use. This non-rechargeable lithium battery is known for its reliability and leak-proof design.

While it offers consistent power until fully drained, it might not give much warning before depletion. However, its long lifespan typically ensures several years of reliable service. Note that despite being lithium-based, it is not rechargeable.

Pros:

Top choice for devices used in extreme temperatures
Impressively durable and leak-free
Long shelf life
Lightweight compared to alkaline batteries
Excellent for high-drain devices

Cons:

Non-rechargeable
Can be more expensive than alkaline options
Power drops off quickly at the end of its life