shavermcspud
Solar Enthusiast
- Joined
- Mar 12, 2020
- Messages
- 567
I have a strange issue that I cant quite put my finger on, batteries are around six weeks old, 3x100Ah SLA in parallel, with a magic eye to check supposed charge status
initially I had the scc and inverter load connected to one of the batteries at the end of parallel connection until I read online that it should be taken from opposite ends of the parallel string, this doesn't seem to have made a difference
During the day it would appear the batteries are fully charging at 14.7v with plenty of current as it appears to tail off to float voltage and current around 12:30
Ive dismissed the SOC / battery capacity readout as this seems to be random at best.
After sun down with hardly any load the battery (ive disconnected the inverter to rule that out) voltage tails off and last night went down to 12.11v (50% soc?) this is with no load bar the SCC being connected to the batteries.
Ive got an ammeter / shunt in place which shows the SCC draws around 800Ma constant.
Ive either got a phantom load somewhere or my batteries are knackered already or I am reading this all wrong.
I have 10x 100 watt panels 2s * 5p, MPPT epever 40amp controller, 1000watt pure sine inverter (currently disconnected) I'm not running anything off the load terminals on the SCC
initially I had the scc and inverter load connected to one of the batteries at the end of parallel connection until I read online that it should be taken from opposite ends of the parallel string, this doesn't seem to have made a difference
During the day it would appear the batteries are fully charging at 14.7v with plenty of current as it appears to tail off to float voltage and current around 12:30
Ive dismissed the SOC / battery capacity readout as this seems to be random at best.
After sun down with hardly any load the battery (ive disconnected the inverter to rule that out) voltage tails off and last night went down to 12.11v (50% soc?) this is with no load bar the SCC being connected to the batteries.
Ive got an ammeter / shunt in place which shows the SCC draws around 800Ma constant.
Ive either got a phantom load somewhere or my batteries are knackered already or I am reading this all wrong.
I have 10x 100 watt panels 2s * 5p, MPPT epever 40amp controller, 1000watt pure sine inverter (currently disconnected) I'm not running anything off the load terminals on the SCC