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

These days 9V batteries come in several different varieties - Zinc-carbon, Alkaline, Lithium, Ni-Cd, Ni-MH, Li-ion. The last 3 types are rechargeable and the first 3 - are not. A typical alkaline battery has more than 9V when fresh. A Li-ion cell has a nominal voltage of about 4V. A typical 9V Li-ion battery contains 2 cells, connected in series, so its nominal voltage is 8V. When fully charged such battery may develop up to 8.4V. Upon discharge the Li-ion battery voltage becomes smaller and may go as low as 6V. This is the limit, which should never be breached. According to the description the EBL 9V battery has many types of protection inside it, but I have never seen any of them in action.I bought 4 batteries several years ago and used them in scales, electric meters and smoke alarm. So far I have no complaints. These batteries last about as long as alkalines, but they are rechargeable. They are more expensive than alkalines to buy, but not that much more. In a long run they definitely save money. A typical alkaline battery capacity is 550 mAh. Compare it to the 600 mAh of this Li-ion battery.EBL batteries are made in China and you cannot trust any of the Chinese products. So I felt a reality check is in order. I fully charged one battery to 8.348V and discharged it with my trusty DL-24 load tester. Not sure what EBL does for their testing, I selected a 10 hr discharge cycle. It means the discharge current is 600 mAh/10 hr = 60 mA. The tester maintained this constant current throughout the testing. The discharge stops at 6V (3V per cell). At the end the tester showed the 473 mAh capacity. It is lower than claimed 600 mAh, but EBL states that new battery can achieve the best performance only after 3-5 charge-discharge cycles. It may be true and I did not check that.In my experience these Li-ion batteries work just fine. You just have to keep in mind that you will see 7-8V on these batteries most of the time. They will never develop 9V like alkalines. Some of the devices may not work with such low battery voltage, but so far I did not find any such devices. My scales, meters and smoke alarms do not have issues with the low voltage. If you have any concern, the only sure way to resolve it is to try.

I got sick of trying to find 9v alkalines and dealing with the cost. I bought a handful of these and was surprised to find that they work in most devices, despite the relatively low voltage. I still wouldn't use them in a smoke detector or in some of my meters that are picky about battery voltage, but at $4.50 each, they're more or less the same price as a duracell off the shelf.I've bought these and the black/green LP 9v set. These are significantly heavier and seem to have a bit more capacity.

I had high hopes for these rechargeable 9v batteries for a TENS unit, but I'm extremely disappointed .They get 2 stars because they do re-charge. But only 2 stars because fully charged they only read 8.23 volts.A new well known brand of non-rechargeable reads at 9.4 on my DMM.I put the fully charged cell into the TENS unit for 15 minutes and it now reads only 8.1v. -- Just enough to make the TENS unit slightly "buzz" at its highest setting.A total waste of money. I would NOT buy this product again.Since my review above, the seller has contacted me to offer a full refund, and I've also done research on industry standards for rechargeable batteries.Based on that research and the kind offer of a total refund, I now give the product a 4 star rating.

I have purchased these before. They last a long time and the only reason I have had to purchase more are because I have lost some. Great batteries.

I've been using these for my Sure Wireless guitar system. Really pleased with them - the 600mAh hold up for several hours before needing to recharge. I had some 260s that would fade in just little over an hour, so these were a nice upgrade. These are a much cheaper option than trying to keep up with 1 use 9v.

I have been doing a lot of research on rechargeable batteries. And I wanted a brand that had for the most part all the sizes available. I was also looking for a brand that had pretty good reviews or that it’s testing of the batteries had a longer lifespan, or a lifespan of staying, charged or using it, charged when use.After many months of using multiple versions of their batteries, I will highly recommend this brand. In fact, I went out to go purchase more. And now almost all of our batteries are rechargeable in this household. It is an investment and will cost you a lot more than getting regular batteries, however, no more throwing batteries away to the environment and it’s not too bad to have to replace them ever so often.Make sure you do your research and understand it just an investment and a lot of money upfront but a lot less money on the long-term. And you’re doing the environment well by not putting batteries out there. Maybe that’s not your ideal situation. But just know these batteries do last a pretty good time and so far in a few different devices. I have not had any issues with the batteries dying too fast. I’m glad that I purchased this brand and will continue to buy this brand.

Ebl 9v lithium battery's great for smoke detectors

Good quality. I will update the review after several uses.