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Will Prowse recommends the Rich solar 400W panels, and I have a few of their 200w panels and have no complaints. But current promotional sale pricing has Rich Solar 400W panels, Qty of 10 for $4,800, and free shipping = $1.20/watt. SunGoldPower is listing a 415W panel, qty of 10 for $2,575 =...

I am drawing a blank, brain lock, and either there is a simple method I am missing or a more complicated answer. After building out a large LiFePO4 battery bank/inverter/solar system for my RV, I was left with enough spare parts and ideas to build a few DIY Milk Crate and Ammo Box style solar...

Just purchased this battery (and have a second one on the way). The battery arrived yesterday, with a resting voltage of 13.11v. I connected a Victron 25A smart charger with the LiFePo4 charge parameters. After fully charging, and allowing time for it to recover, the resting voltage now reads...

Building a milk crate/work box solar generator with 280Ah cells. What can I use to cover the top of the completed cells to protect the terminals and bus bars from contact? When Will Prowse rips apart batteries for review, there is usually some sort of resin insulator sheet. What am I searching...

When it comes to battery capacity testing, I see Will using or listing several odd little gizmos for doing so. I see them on Ebay and Amazon. Why can't I simply use my Victron 500A Smart Shunt with the app to run capacity testing on a battery? Fully charge and zero current calibrate to 100%...

What LFP cells are in the Ecoflow Delta 2, and can I source them for DIY projects? The Delta 2 hits the sweet spot for size/weight/power output (1800W). Smallish and portable. But I would like more capacity than the 1024Wh (though not bad). You cannot duplicate this unit DIY using Eve or the...