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Just installed a multiplus 12/3000/30. I have not programmed the system yet. Hooked up the battery (12v 400amp LiFePo4) Pos terminal > Class T fuse > Contactor > Manual On/Off Switch > Lynx Distributor Bus Bar > 400amp Class T fuse > Multiplus. (I'm planning on adding an On/Off Switch between...

Can't figure out how to get the connector/relay to work. Battery pos to 400amp Class T fuse to Connector (I forget which one but it's the one that I bought from the company that sales the REC BMS in the states) to On/Off switch, to bus bar. Battery neg to shunt to busbar. REC BMS wire marked...

I've built a 4p4s 12v 400amp LiFePo4 battery and I'm adding a REC BMS to it so it'll communicate with my Victron system. After going through the manual, I've hooked up 1cell(-) to the main negative terminal and 1cell(+) through 4cell(+) to each of their terminals. (See picture) Right now...

I have a 4p4s (see picture) 12v 400amp LiFePo4 battery. I decided on the REC Active BMS so it'll talk to my Victron system. I'm hooking up the BMS right now. When testing across the 1cell- to the 1cell+, 2cell+, 3cell+ and 4cell+, I get increments of 3.3v. 1cell- to 1cell+ = 3.3v 1cell- to...

16 Fortune cells. 3.2v 100ah. Arranged for 12v 400ah. I forget if you call this 4p4s or 4s4p. If you can't tell from the picture, all the negative posts are on the left side in the first row and on the right side in the next row, back and forth. Why this configuration? Mostly space and BMS's...

I have 4 LiFePo4 12v 100ah batteries. I want to end up with 12v, 400ahs. Each battery has an external BMS. I want to charge these batteries through a Victron Multiplus. Would I hook up the BMS's to a bus bar, then the bus bar to a smart shunt, then to a Victron Lynx Power In, Victron Lynx...

When using a FLA battery for your starter battery and LiFePo4 for your house bank do I keep the negative wires separated? I'm guessing, you'd use the engine at the Neg for your starter battery and a bus bar for your LiFePo4 batteries? And not use a "off/starter/house" switch in the system? The...

What do I need to know about placing my LFP battery banks? Heat? Moisture? Can they be neat the engine? In a cockpit locker? I've only ever seen them in under set the setee or dinette area. Is there a reason for that?

I'm building a system for my boat from scratch. Right now the only power comes from an alternator and has two 75ah batteries. One house, one starter. I'm trying to understand how to manage charging from multiple sources. Solar, wind, alternator and shorepower. The boat doesn't have...

Emily and Clark's Adventure

I've looked through a bunch of threads and there have been a lot of threads on this. My boat has almost nothing right now. Nav lights, a couple interior lights, a VHF Radio, a depth sounder. It runs off the start battery and uses the alternator as its only charging system. I'm...

Last year Will did a review / breakdown of the TalentCell 100ah (111ah tested) LiFePo4 batteries. At the time they cost just under $800. When Will reviewed the battery, there was a problem with the cold shut-off sensor, but Will posted in the comments they the company seems to have fixed the...

I'm guessing this is a basic question but I dint know what terms to Google so I'm having trouble finding the answer. Let's say a battery has 110ah. And I have a unit that draws 29.2a. 110ah/29.2a=3.76 hours. To keep the battery healthy, I don't discharge the battery more then 50%. So, 3.76h x...