100 a/h Lithium Battery for $21?
Saw this ad this morning, a 4-pack of 12v 100 a/h lithium batteries for $82.99. So 400 a/h when linked in parallel. Our new-to-us 5er is a 2008 model, so I'm aready planning new electronics, conve...
Forum Discussion
rlw999 wrote:We built a 200ah lifepo4 pack using 4 prismatic cells and a BMS. Been powering our a/c and microwave extensively with this LifePo4 pack for the last year. I assure you, the primary mission of a BMS on a Lifepo4 battery is to protect the cells from the user---not the other way around. You may find it hard to believe, but Lifepo4's are that safe. I've pushed 110a through our BMS continuously for over an hour at a time---it barely gets warm to the touch. The BMS and lifepo4 cells in a lifepo4 battery are no more likely to be a fire hazard than any other device that handles high amp DC such as an inverter or converter. If you can find a documented case of internally induced thermal runaway, with a Lithium Iron Phosphate cell, which created a fire hazard outside the cell itself, I'd be very interested in hearing about it.
. . . LiFePo4 batteries are *safer* than other chemistries, but still require an operational BMS to make them safe. And in some cases, the BMS in the battery itself can fail and cause a fire . . .
