Tenavolts AA Lithium Rechargeable Batteries (2 Pack with USB Charger)

Amazon Customer NJ: Have been using the Tenavolts AA Lithium Rechargeables in two Blink Outdoor cameras for over a year. My experience is limited to using them 4 at a time in Wasserstein AA Lithium battery extension cases. Results have been excellent IMO. The friend who recommended them uses these exclusively (2 at a time) in all his Blink cameras, says he's tried several brands which don't work. Some ruined the camera. My cameras face a busy sidewalk and average over 75 (5 -10 sec) triggers/day each. I have 3 sets, get about 2 months per charge. No more dead batteries!

United States on Nov 07, 2023

Colleen: We have several devices that seem to go through regular batteries so quickly. We changed over to these and they seem to last longer which saves up money overall.

United States on Oct 21, 2023

G Whiteman: I will assume all the other good reviews. Charger is compact and comes with the batteries so including with luggage is not a problem. Each battery has a blue light at the end which switches off when fully charged.
I bought these AA lithium for a head lamp that steps down quickly when alkaline batteries are used as they don't maintain steady voltage. This can be plus or minus depending on your circumstances.

Australia on Oct 20, 2023

David SDavid S: Bought one of these to use for my blink cameras. Works great and easy to charge. Wish the included cable was a bit longer but otherwise happy with it.

United States on Oct 16, 2023

A Person: I had these in my smart lock, and first charged them after 8 months of use without issue. However, after this charge the smart lock only went about 2 weeks without warning of low battery status. Two batteries had fallen to 0V.

Recharged again, after about 2 weeks one battery had fallen to 1V and the other to 0V so can only assume these batteries have failed.

Edit: I had a response from the manufacturer who said to send back for a replacement.

United Kingdom on Sep 23, 2023

Paolo: Fanno ciò che promettono ma tendono a scaricarsi se non utilizzate anche dopo qualche giorno.

Italy on Jul 14, 2023

Stefano Masiero: Fantastiche

Italy on Jun 24, 2023

FirefoxFirefox: Provate appene arrivate queste pile ricaricabili AA subito con il mio flasch Canon 580 EX, eseguite 70 foto al buio apposito e devo dire che come primo test funzionano.
Il test vero lo farò nelle serate di festa dove il flasch sempre acceso per molto tempo sarà sotto stress.

Italy on May 25, 2023

djdon: I purchased these for use in wireless microphone transmitters. I can get about 8 hours from 2 batteries per charge. That's plenty for any show I do. Disadvantages is, the battery indicator on the microphones is always 3 out of 3 bars. The indicator does not indicate capacity remaining, only voltage. I wish they made an 8 bay charger, or something more than the 4 bay and less than the 20 bay.

8/11/20

Follow up.
I now have 2 of these chargers and 16 AA batteries. I use them for karaoke mics. Unfortunately, I haven't been able to use them every day since Covid to really test their durability/cycling tolerance.
I'm using them in VocoPro 5800 mics. I can leave the mics on for a 4 hour show with no issues. I've left them on for a 7 hour show with no issues.
They charge pretty quickly. I've never had to wait more than about 90 minutes for 4 batteries to charge. I have both chargers plugged into a 7 port powered USB hub. The chargers draw about 1.25 amps per charger. The hub is capable of 30 watts which is 6 amps at 5 volts, but I'm guessing that the charger is only capable of drawing the 1.25 amps, which is half of 2.4 amps, which is what a normal phone charger...

United States on Jan 11, 2020

G Glover: This is one of the only battery types out there that works in my VR controllers (O+) and lasts and lasts and lasts. The only negative to that is that you don't get a depleting battery gauge, it just goes until it dies. But I believe that's because these squeeze out every last drop of power until the safety/protection kicks in.

Thankfully they charge pretty fast (depending on what USB charger you plug them into). I had a full charge again in less than 2 hours. Oddly enough, the batteries themselves have a blue light on the bottom indicating charge status. While in the charger Blue on = charging; Blue off = done.

The negatives I came across are:

1. You can't charge these on anything but the included charger. I tried charging in an expensive battery charger and it will either charge these for a while then just stop, or it doesn't even start charging them. I noticed rapid flickering of the blue lights on the batteries when my charger showed 99% then some stopped but others kept charging for a while. (I'm not sure if they were being charged at all because when I put them into their own charger they went for a while and stopped charging, this could be because their...

United States on Jan 07, 2020