Hey @HazelDawn, that thread title gives it away a bit — #OR4 is the Victron error/status code meaning the charger's been switched off remotely, either via VRM, a connected BMS, or something on the...
Hey @WillWebb, interesting setup! One thing worth considering with lower voltage MPPT inputs is how your array configuration affects things during partial shading or overcast days - which let's be...
Nice one @Chippy33, that's a solid start for the money.
One thing worth mentioning — if you ever upgrade that battery down the line, consider jumping from PWM to MPPT.
Reply by CraftyWelder:
@AnneOliver Worth thinking carefully about your EV's minimum charge rate before committing to anything.
Hey @KeithClark71, the root issue is that PWM controllers use pulse-width modulation to "approximate" a full charge rather than properly topping the batteries off — your AGMs never quite...
I finally got a small system running on my workshop last month and managed to keep it under £150 all in.
CraftyWelder | 847 posts
@LazyWarden The jumping SOC is almost certainly your synchronisation point being off.
Been umming and ahhing about this for a while. I've got a 100Ah AGM leisure battery in the van and currently using a basic 140A split-charge relay off Amazon (paid about £18 for it).
@VoltWill that 40°C derating threshold is really worth keeping front of mind here. With a shepherd's hut install specifically, you're potentially fighting summer ambient temps before you've even...
Finally got round to writing this up after a few people asked me about it in the solar sizing thread. I put a Charnwood C-Five into my 20ft x 10ft timber frame cabin back in November.
Great points from everyone above. One thing nobody's mentioned yet — even if your combined figures technically scrape under the 75/15's limits, you're running with virtually no headroom.
Hey @Macca97, welcome to the forum! Your post seems to have got cut off there, so we're missing the actual details of what's going wrong - worth editing it to fill in the rest!
That said, the...
Ha, welcome aboard! That's a cracking system you've got there. I had to double-check those battery numbers — 15 Battle Borns at 24V is some serious storage capacity.
