LifePo4 Charge Performance
Thinking seriously about replacing our two GC2's with a pair of 100ah LifePo4's. Hearing a lot of chatter about how lithiums accept a charge much quicker than lead cells. Very familiar with how ou...
Forum Discussion
OOPs! Just read that Relion uses the charger to heat up the battery and:
"With the low-temperature RELiON RB100-LT 100Ah battery, it takes about an hour to warm from -20°C to +5°C before charging begins"
(5C is that 41F)
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EDIT--reading that BB has been called out by some for that 25F charging since you can't really charge LFPs below freezing except at very, very low current.
Issue is the slow ion movement in cold temps where hitting them with normal current will damage the battery (plating for one thing)
Comments on the lack of data showing proper current limit vs temperature so you know how much is ok at below normal range--ie below 5C. (Trillium guide is unusual for that it seems)
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Battle Born says their BMS will not allow any charging below 25F compared with Relion's -4F.
I can't find BB charging specs except the 0.5C recommended. I wonder what their reduced amps threshold temp is below 37F, if any.
They mention the industry standard:
IEC 62133 certification mandates that charging has been certified between 37F and 113F (3C
and 45C).
"With the low-temperature RELiON RB100-LT 100Ah battery, it takes about an hour to warm from -20°C to +5°C before charging begins"
(5C is that 41F)
------------
EDIT--reading that BB has been called out by some for that 25F charging since you can't really charge LFPs below freezing except at very, very low current.
Issue is the slow ion movement in cold temps where hitting them with normal current will damage the battery (plating for one thing)
Comments on the lack of data showing proper current limit vs temperature so you know how much is ok at below normal range--ie below 5C. (Trillium guide is unusual for that it seems)
--------------
Battle Born says their BMS will not allow any charging below 25F compared with Relion's -4F.
I can't find BB charging specs except the 0.5C recommended. I wonder what their reduced amps threshold temp is below 37F, if any.
They mention the industry standard:
IEC 62133 certification mandates that charging has been certified between 37F and 113F (3C
and 45C).
