On Wednesday, April 4, 2018 at 5:06:53 PM UTC-7, wrote:
On Wednesday, April 4, 2018 at 7:16:02 PM UTC-4, Darryl Ramm wrote:
r.a.s. is powered by lithium.

- you mean the type that comes in pills? :-)

Regarding the other messages, I am surprised that the BMS does not protect from a short, I thought that was one of the stated protections officially promised. And that BMS was one major advantage of the (better) LiFePO4 batteries over SLA.

What happens is a short is way over the 15 amp max discharge current and the battery is damaged and gets hot but the BMS shuts it down at 10V before it burns.

12V 9Ah
Voltage: 12V
Capacity: 9Ah
Chemistry: LiFePO
Weight: 2.8lbs (1.3kg)
Dimensions: 5.9"(L) x 2.6"(W) x 3.7"(H), [151mm(L) x 65mm(W) x95mm(H)
Life Cycles: 2,000 @ 80% DOD
BMS YES (Internal)
Max Charge Voltage: 14.6V
Discharge Cut-off Voltage: 10V
Max Charge Current: 9A
Max Discharge Current: 15A
Operating Temperatu -22°F to +140°F, (-30°C to +60°C)


Richard
www.craggyaero.com









Richard