In this video, I review an Ampere Time 200Ah 12V lithium battery with self-heating capability. Low temperature charging down to -4F/-18C. I also test out one of their 20-amp lithium battery chargers.



Overall I found the battery to be pretty well built and performed well, given the comparatively low cost. See my Pros & Cons List below for more details.

Everything tested OK except for an issue with the max-rated discharge current of 100A. In my test, I could go as high as 200 amps. Ampere Time tech support told me that the lithium cells are rated at 200 amps, and the BMS may allow up to that if it's not running too hot. But it's not recommended to preserve long-term cell life. The BMS will stop charging if it senses its temperature is too high.

*Fair Disclosure* I received complimentary review samples at no charge.

Pros
:
Economical Price and Free Shipping
Self Heating for Charging as low as -4F
Popular Brand on Amazon with thousands of reviews
Detailed Manual with excellent illustrations
Sell their own Lithium chargers

Cons:

No Bluetooth app
Only a 5-year warranty with a China-based company
The case lid is glued shut
Lithium Cells are embedded in foam epoxy
Only tape holding BMS in place
Max rated discharge amperage is only 100A

Ampere Time USA website: https://www.amperetime.com/?ref=iXYpn5Wk
Ampere Time CA website: https://ca.amperetime.com/?ref=iXYpn5Wk