Recent content by opticalcarrier

Got one of these 30VDC @ 10amp DC power supplies, and some nice14awg banana cables. Was doing a top-balance on 16x paralleled lifepo4 cells (each were showing 3.295vDC) running it at 3.6V @ 10amps and it pretty quickly went POP and let out the magic smoke. took it apart and looks like a diode...

what about for home solar uses where you expect to discharge to very low SoC every daily cycle? For instance, in my case here in AL it makes zero sense to try to sell any power back to the POCO, so my best path is to use battery as much as possible when the sun's not shining. Or, and this is...

so if buying one from amazon, do we need to de-rate 0.5x on the specs? where If I wanted to charge @ 100amps, if I buy from Amazon, would I still need to get the 200amp version? because they are around 2x the price from amazon.

Wow - the Daly BMS on Amazon is WAY more expensive than going through Ali!

yes im thinking going with one of the Daly models with CANBUS, I suspect eventually a software upgrade will be available with solark to support integration of BMS. ugh and now arguing with Nimi Liu at Dongguan Daly, on the difference of a 2p16s and 16s2p, she says they are they same thing I...

I sincerely appreciate you guy's concern, thats actually pretty great that sentiment is here. im just a newb on this solar side though - Ive worked HV AC and DC (USAF flightline comm/nav tech), they gave me great training, and a great career :)

oops my bad should have specified, its for a 16s2p 48v bank on a solark12k

I see. well ok then Ill have to get a BMS then, will start shopping for a 32channel one, either that or two 16ch ones.

im considering just bottom balancing, as I understand you can get away with no BMS that way. the batteries will rarely be used, is going w/o a bms really that bad an idea?

@ Just John: yes please recommend a 60amp PSU, and also any other items/equipment/cables/connecters Id need to do a proper top or bottom balancing of 32 310ah cells? I currently have a fluke meter, thats it.

Can someone recommend a solid power supply for top & bottom balancing? Ive ordered 32 of the catl/310 cells from Dongguan New Lightning. Any other items I should get placed on order?

1st off thanks very much for offering to help me out here - 2nd the well isn't in yet so I've not really been educated just yet so I'm not 100% on all the terms but what I think the well driller estimated on the wells around me that he'd need to drill down 400ft actually that number was 500ft...

thats the problem its DEEP. 400ft to the the aquifer, but the pump will be at about 300ft. Ill want as much GPM/pressure as I can buy

A well pump connected directly to battery, bypassing critical loads panel so I never take AC startup surge hit when the pump turns on

very cool info there, has anyone seen the comparable decoder for their submersible 48VDC pumps? EDIT TO ADD: I did find a great chart about halfway down this page: https://thesolarstore.com/grundfos-sqflex-11-sqf-solar-submersible-pump-p-525.html Looks like Ill be getting that 11 SQF 2