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Wondering if one or the other would be better for vibration / impact (marine setting on sailboat). I'm guessing the 240 ah has less coil "packs" on the inside. They both have the exact same outside dimensions. I found the attached picture of the inside of a prismatic cell. Thoughts? /...

This thread is for logging the journey of installing a DIY lifepo4 bank on our 39' cat which I'm fitting out to be off-grip electrically. As far as builds go, this is fairly vanilla. But perhaps it will be of interest to someone and, in any extent, I can refer back to it in the future. This...

Hello, and thank you in advance for your help. This is for my off-grid boat (i.e. completely independent of a marina). I'm installing a Victron Orion 30 amp 12/12 DC-DC charger to charge my house battery from the starter battery while the alternator is running. I have a 70 amp alternator that...

My capacity tester is reading less amps than my Overkill Solar BMS says is being taken. I took some pictures as an example. This is a 12v, 280ah battery. The BMS showing 7.7 amps being drawn while the capacity tester shows only 7.03 amps being drawn. Doesn't seem there shouldn't be that...

I have Qty (3) 320 watt rigid SunPower panels on a boat I recently bought: http://www.solardesigntool.com/components/module-panel-solar/Sunpower/1186/SPR-320E-WHT-D/specification-data-sheet.html These are only 3 years old. Spec sheets rates them 90% output at 12 years. In full sun yesterday...

Long story short, I recently purchased at 39' Catamaran that came with 10 DragonFly LiFePo4 batteries (essentially BattleBorn but with a different sticker). They are 100 ah each, so that gives me 1,000 Amp-Hours at 12 volts. They were purchased in 2018. I'm planning to capacity test each but...

I'm working on putting my first build together. Finally received the 280 Ah cells from "LiitokalaVariCoreFlagship" after about 3 months. Decided to change my system from 24V to 12V in the months of waiting. I have two new-in-the-box (unopened) Overkill 8S BMS's for 24V that I am selling at a...