9V LiPo Sale: $7.29 thru 7/9
I'm ordering a second one of these since they're on sale, free ship from Banggood. Nice unit, has a USB micro charge jack built in, red charge LED on the bottom (red=charging, off=charged). I tested one already: 9.5V out and honest 350 mAH capacity. Claims 400mAH, so pretty close. Obviously good for any legit 9V battery application, but I plan to use this on a mini robot using a HW Board. Grab one before the price goes back up to $10! https://www.banggood.com/ZNTER-S19-9V-400mAh-USB-Rechargeable-9V-Lipo-Battery-p-1070703.html
![9Vlipo.jpg](/discussion/download/120859/9Vlipo.jpg)
Comments
I dislike the auto-off circuits very much, unless it's because of low pack voltage. These would have been nice when I had a room full of people using HomeWork boards!
Yes, always on, meaning there is some self-discharge, but I haven't determined how much. Package says to charge after 3 months of non-use.
Obviously at just 350 mAH capacity they aren't good for very much for very long. Package says "built-in protection circuit will halt in case of overcharging, over-discharging, short circuit. Please recharge the battery again to recharge it."
Here's my quickie bench test. I hooked it up to a high-power motor and it popped the internal circuit (breaker) immediately. Didn't get a current reading. It did reset when I charged it for a few seconds (PHEW!). Then I put a smaller motor on (100 mA) and it ran fine. I slowly increased the load up to 800 mA and held it there for ~5 seconds and it never stopped. Not too shabby IMO.
Just ordered four from China, $6.99 each, free ship. Will advise.
https://www.banggood.com/OKcell-9V-800mAh-USB-Rechargeable-Lipo-Battery-for-RC-Toy-p-1022214.html
ZNTER's 400 mAh batteries test at 351. Mo bettuh'.