123A Rechargeable Batteries, FARSAIL 4-Pack 800mAH 3.7V Rechargeable Batteries and Charger for Arlo Camera VMS3130 VMC3030 VMK3200 VMS3330 3430 3530, Alarm System, Flasglight

Compared to the more expensive brands there is really nothing to conplain about. I use these in my tac light and they work fine, running the light on high they seem to fade kind of fast but using on high beam isnt really necessary for ling periods of time. Love the little charger that comes with it it actually shows the stage of the battery.

So far this works as expected. All four batteries charged correctly. (FYI, I'm using these on a pistol light/laser that needs higher voltage than a standard CR123A --- these batteries work very well to make the light/laser product actually work correctly. Without these batteries the light/laser works only for a very short time using Duracell CR123A batteries. Once the Duracell drains a little its operating voltage drops enough that the light/laser fails; these higher-voltage batteries cure the issue.)

Edit: They sent replacement batteries that works much better. Giving 4 star for the great customer care and response.Old: I am using it with august lock, non-rechargeable normal battery lasts at least 3 months and my lock warns me to replace them when the battery is at 10%. But with this rechargeable battery they suddenly drained to 0 without any warning. This is waste of money and time.

Charged fast..great product..

I like the battery charger

The media could not be loaded. It is complicated to contact the seller for warranty, could you please indicate me how?After only two cycles (discharge - recharge) two batteries are not charging at all.OK, OK! this is the follow up:A while ago the batteries went belly up, death!, I struggled a little contacting the vendor and instead he/she contacted me. After explaining my situation they replaced, in record time and at no cost to me, the full set of batteries.I was completely satisfied with their proactive response and support.I recommend them very much. Did I mentioned the problem appeared almost a year later I bought the goods?Thanks

Works great for two months. Then all batteries hold a charge for 3 days.

Charged quickly out of the box and then put 2 of the 4 batteries to work. Time will tell if they last as long as buying new from the store but mainly wanted rechargeable anyway to save cost down the road.