Recent content by bigjoncoop

@matt2006 I am interested in 8 or 12 modules! I just added a bunch to my cart on ebay but figured I'd try to get in touch with you first. (I'll also shoot you a msg on eBay after this) I had purchased eight of these modules a while back from somewhere else and have been looking for more when I...

I've got some 60ah & 100ah Lifepo4 prismatic cells (GBS-LFP 60ah/100ah) I purchased from batteryhookup recently. They are in good condition and have no signs of swelling etc... This is the 2nd set of cells I tried to capacity test and the results seem like something if not rite... They have a...

Hey my fellow DiYers, I'm building a portable "solor gernerator" that consists of 5kwh LifePo4 batteries, a good 2000w inverter etc... This will be in my work truck and I would like to charge the batteries using my vehicles alternator so it is always charged and ready to go.... The batteries...

Few questions about parallel and series connections with solar panels. For instance I know with batteries in order to put them in parallel the voltages must be almost identical. I'm trying to charge a 7s battery which has the full voltage of 29.4 volts My solar charge controller states that...

I feel I need to chime in. I have ordered at least 20 or more packages from Battery Hookup. Half of them have been in the range of 1kWh battery packs, and the other half usually 18650's.(couple hundred at a time.) And I need to say that I can't remember any of my packages not being shipped...

@Tecnodave @Jim Burrow Hey guys thanks for getting back to me so quick. All right so parallel it is... Yeah, those panels are quite old I believe the data sheet said 2012 I found them locally on Facebook Marketplace yesterday. He was selling them for $50 a piece and they are brand new. Old...

Hey, I've been building large lithium batteries for quite some time now for myself, friends, and clients. (1kWh-15kWh) At home I have a 10kWh 24v battery and a 6000w LF Split Phase inverter. Which I normally just used for emergency backup power during Hurricane Season etc... I have a PowMr...

Cool. Thx for your guys quik response. @DThames - yeah it is 7s. Lol other wise I'd would only have a 24v battery for a few mins each cycle, and end up with a 19v - 22v battery... ? So in the situation I'm better off using a step up mppt charge controller if I only want to use one solar panel

Hey fellaz, I'm new to the whole Solar game but have been easy to lithium ion batteries for a while now. I like to reclaim cells and build custom packs. I currently in the middle of building a 50Ah 6s 18650 pack to put into a DIY solar charge case. I made many of these types of cases but never...