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Hey guys! I´m finally experimenting with real battery and electricity projects after a long while of learning about it from a theoretical point of view! I´m aspiring to set up my own off grid power. But naturally I´m starting small, so I just recently got myself 3x NCR18650Bs to power first and...

Hey guys! I´m living in Greece, and I´ve been searching everywhere for used 18650 Lithium cells with minimal luck. Today in a shop I came across an old battery pack with a blown BMS (due to water damage), that the owner had kept at hand for 1 year. It's from an old Xiaomi scooter. The pack has...

Hey all! I´m researching a good option for a small 12v set up. I´m looking for a small pure sine inverter in the range of 600W. I´ve been googling my brains out, and looked around on this forum: But I have not yet seemed to find a simple suggestion as to a reliable source/brand to opt for...

Hey! So I just got a bunch of old batteries off of a local el scooter vendor, while I´m visiting my family. I´m flying out of here in a couple of days, and from what I´ve researched - it´s not allowed to bring them on the airplane. Suppose I´d try anyway - Have any of you guys got any...

Hey guys! I have a question that I fear might be redicilously obvious, but I just need to be sure: I have a LED strip that reads 12v per meter. When I then shorten this, say in half, would the voltage then be 6v? I´ve got 3S Li-ion 18650 for my set up, and my LED strip is 60 centimeters. Thanks!!

Hey! I bought a second hand Victron Phoenix 24v / 1200w inverter -- (seller promised it was literally just installed, and taken down again). When I use it with my battery (li-ion 29.4v) it gives an electric kind of buzzing sound that is quite annoying when there's not any other noise around...

Hey! I'm about to assemble together a battery pack of 99x18650 (3A) li-ion cells. I am thinking a 3S configuration, and I was thinking to make the pack in three. In other words three packs of 3S 11P, with each a BMS of 40A range. And then connect them all with XT60s. I am fairly new to...

Hey guys! Small issue here I was hoping someone could shed some light on: For my off grid van life I need a battery to sustain a small variety of devices. Including cellphone, laptop, LED string lights, and the recharge station for my codless tools from DeWalt (batteries of 18v, charged by model...

Hey So I just finished setting up this li-ion battery from repurposed cells. It's my first one of some scale (7S10P 29.4V 33AmpH), and it seems to work well. Now for the first time I hooked it up to my solar panels. They are each 50w, so I put them in series to give 24v. It looks as if...

Hey! I'm trying to harvest information on the advantages/disadvantages of different volt systems in battery builds. As I have 100x 18650 li-ion cells of 3000mah each to play with, I'm trying to determine what's the best set up. I've been dwelling over a 12v 4s set up or a 24v 7s set up. I...