BrockWI
Well-known member
I am relatively new to this, but familiar with charging larger battery banks. We have a 24kw SLA battery bank running at 48v feeding a xantrex 6048 inverter with our solar PV setup.
Anyway for our first week used used the level 1 120v charger and looking at the kwh used and now using the level 2 charger I noticed a significant drop in KWH from the same apparent SOC.
So what I am wondering is what is the on-board charging / system loss? Lets just assume it's 100w to have it on and charging. If that's the case and you had to charge 18kwh the level 2 for three hours is 300w lost. The same thing on level 1 would be 16 hours and at 100w its a loss of 1600w. That seems to me to be quite significant and something I hadn't thought of when using a level 1 charger for the long run.
Thoughts?
Anyway for our first week used used the level 1 120v charger and looking at the kwh used and now using the level 2 charger I noticed a significant drop in KWH from the same apparent SOC.
So what I am wondering is what is the on-board charging / system loss? Lets just assume it's 100w to have it on and charging. If that's the case and you had to charge 18kwh the level 2 for three hours is 300w lost. The same thing on level 1 would be 16 hours and at 100w its a loss of 1600w. That seems to me to be quite significant and something I hadn't thought of when using a level 1 charger for the long run.
Thoughts?