TalentCell 9V Lithium Ion Battery: High Capacity 500MAh Rechargeable Li-Ion Polymer Battery With Micro USB Charging Port - 1-Pack For Ultimate Convenience Review

The battery cuts off far more frequently when used in a Nerf gun. My non-rechargeable 9V works just fine. That's my review!

First; I am suspicious of the mAh claim.It works well and holds a charge. I use my 9v powered multimeter quite frequently and got tired of looking for new batteries and borrowing them from smoke detectors. A terrible place to take them from when working with electronics but I had to do *something* to keep working.then I saw this. Now I never have to worry about scrounging around for batteries and it's easy to charge when I'm finished using it.

I have a gas detector that runs on power and uses a 9v for batter backup. Unfortunately, where we have the unit can be bumped and will fall off the wall once a blue moon. It won't announce it's on battery until the batter is low, and it doesn't take more than half a day to kill the battery. I bought this rechargeable battery so that if it happens to drain, I'm not out a battery. It's already paid for itself.

I have had this battery for a while now love the convenience of just recharging rather than shopping for batteries it charges quickly great buy for the money

I have active pickups in my acoustic guitar and am so tired of buying batteries. This guy is a little thicker but still fits. I can play a show or 2 and recharge n keep going. Great investment for musicians for sure

Great product works well. However it is larger than a standard 9volt battery. If space is critical, this battery may not fit.

This battery did NOT fit in my Shure wireless in ear monitor receiver pack. I have had this equipment for 4 years, and have never had an issue with (multiple brands of) batteries NOT FITTING INSIDE.In fact, it scraped a small serial sticker inside that I had to peel off just to fit the old battery inside. This battery caused damage.DO NOT RECOMMEND THIS BATTERY.I will be asking for a refund on this.Aside from the unnecessary and difficult packaging on the case AND the battery itself, they…

I needed a good battery option for my TENS unit and this is perfect. It’s basically the cost of a couple batteries but will last MUCH longer. It recharged quickly and holds a charge as long as a normal battery lasts.

The battery is shrink-wrapped and within a plastic case, which is also shrink-wrapped. Awesome product that will power guitar pedals. It took me 10 minutes to unpack and about 30 min for a full charge. Awesome product!

Fantastic enclosure. It is possible to use the battery while charging, though I wouldnt reccomend it.I use these for temperature gauges.The status light is nice and bright enough to shine through thin objects.Time will tell how many charge cycles it will take.Ill update review after a month of use.

I've gotten tired of buying standard 9V batteries for my DMM so I tried this. It fits and works great in a Fluke 87v, charged with no problem.

Holds a charge well. Works well.Fits inside my Fluke multi-meter (model 79 III). Please note, the battery is slightly fatter (thicker) than a standard 9V battery. If your device has a tight battery compartment, it may not fit.Gets 4 stars because everything should be shipping with USB-C.

I like these because they hold a charge for a long time, way better than the other rechargeable 9v batteries out there. That's my review.

Rated 5* for the convenience of not needing to throw out old and buy new. Mine has been in very light use (which is most 9v I’d guess). The only issue is that it is a fraction larger (taller) than a standard cell - not much be there is a difference.

It was working fine for a few cycles, charging up to the full 9V. However a couple months later it will charge up to 8.2V and not go any higher. When this happens the light on the battery is green so it thinks that it is fully charged.

I haven't had this battery for very long. Feeling dumb for not looking for it sooner. I only use a 9v battery for my smoke detector. So far it seems to be working great.

These have been working fine with my IR lights for ghost hunting. Ran fine for a few hours and still had some juice left. I may end up getting more of these because of how they charge. Very happy with purchase. As with any battery, if it sits for a very long time, they will eventually die. So make sure you use and charge them every so often.

After the battery in my digital multimeter ran out, I got this to replace the alkaline battery. Everything works so far.NOTE: Removing the plastic wrapper on the battery made the battery fit better. If you're having issues with it not fitting, try removing the wrapper.UPDATE: Still working in my multimeter after 11 months since I bought it.

I received this on Nov. 14, 2020. I put it in a smoke detector that day. It is now April 17, 2021. The smoke detector just started doing its low-power beeping yesterday. I just recharged it for the 1st time yesterday! So it lasted 5 months on 1 charge, which is pretty darn good. It recharged using the micro-USB port in about 3 hours.The micro-USB recharging port is AWESOME! It is SO EASY to recharge them. The bottom glows red when charging, and turns green when it's done. EASY! No need to find…

I bought this battery for my TENS unit, and it fits fine - it is within the standards for a 9v battery size (the standard is pretty generous.). I love that it does not need a separate charger, and lights to tell when it is charging/done. Seems to work fine. Can't speak to its longevity yet, though.