Product Details

• Brand: Tian Qiu
• Model: AG5/393A

Customer Reviews

Watch Battery for Coast LED-Lenser Key Chain Laser Pointer
I was thrilled with this purchase. I bought this pack of TEN batteries here at Amazon and I paid about half of what a popular electronics retail chain was charging for just ONE single battery! I was shocked!

you get what you pay for
I bought 2 10-pack of Tianqiu brand ag5/393 16.4 cents each. the good news ends here. I intended to use them on a laserlyte subcompact rail laser system. The battery is very under powered and do not sustain power level at all. I know this because Laserlyte generic factory batteries lasted over 90 mins(as advertised)before losing brightness. BUT when I used this brand, the laser was very dim, less than half strength when new and immediately started to lose brightness in a extremely fast rate, it took only 15 mins to drain all power, I can't even see the laser unless in darkness last 5 mins of the 15. The specs of batteries aren't accurate, not even close. 75 mAh??!!? more like 7.5 mAh/near dead batteries. I can see them in calculators and cheap digital watch that's about it, if you use this in a analog watch, your watch might not keep time correctly after couple weeks at most. put these in flash lights would be a joke. DO NOT buy these if you intend to use on gadgets with movable parts (motor/gear) or lights you will be very disappointed. Frankly, unacceptable.