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Hi, thanks for your reply, ok so that may be the problem, just putting a clamp meter on the positive cable (yes it is DC) is not shorting the cables. New to all this stuff, I will try again today, if the sun comes out. I can hook it up to my existing charge controller with some effort but first...

Just realised that the old panel I measured was actually connected to the solar charge controller..:rolleyes: I am a dork!

Thanks for your reply. Yes I guess you are right. But it is good to know if others feel the same. It seems to me that all these cheap BMS modules that have no ability to tell you anything are only chineeze junk. I think they are on the bandwagon taking advantage of battery enthusiasts who...

If I connect them in series that would give me 10a @24v, so my mppt controller can handle 20a @24v but it will be charging a 12v battery, how does that work? Does the mppt controller manage the voltage back down to 12v to suit the battery.? I don’t understand.

Thanks Kronbread, yea I covered the panel first. So the outcome was that I got 4.99amps with 23.6volts on one panel and 4.95amps and 20.7volts on the other panel. As I purchased these with a description of 12V, 300-399W, Short Circuit Current 18.27A, Open Circuit Volage 21.4V, I thought that I...

No MPPT, with the panels, I am pissed off with buying crap panels, which I only learned about after the fact. At this stage my inverter is only 12v so until that gives up the ghost I am stuck with 12v. Maybe later I will switch to 24v.

Hi, new to this forum, and new to making Lifepo4 battery banks. Well I am only trying to make a wee small one at this stage, thought best to start small! But having purchased 4 x 32Ah Littokala Lipo4 batteries, (to make 12v battery) and having waited for months to get them, then further wait...

Update, so finally after repeated efforts I got the charger to function most of the time. Only occasionally does it fail. I managed to swap out a mosfat from one of the boosters to the other one and now have a functioning one...lol However I am reluctant to use it on my JK BMS, so for now I...

Just taken delivery of two new panels, 12v 300w, 16.7amps. Took them out into the sun, put the clamp meter onto the positive cable and only got .3 of an amp. Went to my old panels (which the new ones are meant to replace) and got 3.5 amps measuring the same way. However the new panels still...

Hi all, so in my endevours to build a couple of small battery packs, I have now collected a bunch of different BMS. The first ones I got simply did not funtion correctly, on testing it was evident that there was something wrong with them...in the bin! I have since purchased a few others...