invento123
New Member
- Joined
- Mar 30, 2021
- Messages
- 25
I have a Renogy 12v 100ah LiFEPO4 battery and an Ampere Time 12v 100ah LiFEPO4 battery setup for use in my shed. The Renogy battery is installed in a Goal Zero Yeti 1250 with the Ampere Time battery connected in parallel to it. I have battery State Of Charge meters on both of the batteries to measure current draw and SOC.
Tonight it was a bit chilly in the shed, about 58 degrees Fahrenheit and I was running a 600 watt heater to keep warm along with a soldering iron and some lights. All together pulling around 850 watts or 70 amps at 12 volts from the 2 batteries; 35 amps each
When the batteries both reached around 50% charge the Yeti 1250 shut off due to low voltage, around 10.6 volts. Is this normal voltage sag for LiFEPO4 batteries?? I know they perform worse in cold temperatures like all other batteries but this seemed pretty extreme. After letting them sit for a minute they both rose back up to around 12.2-12.3 volts. The Renogy battery also has a built in SOC monitor and in the app it showed around 50% charge as well so I don't think my battery SOC meters are off. Any ideas???
Tonight it was a bit chilly in the shed, about 58 degrees Fahrenheit and I was running a 600 watt heater to keep warm along with a soldering iron and some lights. All together pulling around 850 watts or 70 amps at 12 volts from the 2 batteries; 35 amps each
When the batteries both reached around 50% charge the Yeti 1250 shut off due to low voltage, around 10.6 volts. Is this normal voltage sag for LiFEPO4 batteries?? I know they perform worse in cold temperatures like all other batteries but this seemed pretty extreme. After letting them sit for a minute they both rose back up to around 12.2-12.3 volts. The Renogy battery also has a built in SOC monitor and in the app it showed around 50% charge as well so I don't think my battery SOC meters are off. Any ideas???