I've started exploring and learning about rechargeable batteries as a hobby for a few days now and I've spent more than a hundred dollars. That's why I haven't been posting lately

I've bought pretty much the same thing that's on this video lol. Definitely not cheap. I could've bought RE 9 but I chose to spend some money starting out.

If anyone's got experiences with this, pls share. Thanks

https://www.youtube.com/watch?v=rdPcA-8b_1U

#xtar #electronics #battery #lithium #vx4 #lithiumion #nickel #iron #phosphorus

The Unreasonable Power Density of Lithium-Ion

https://fed.brid.gy/r/https://hackaday.com/2026/03/21/the-unreasonable-power-density-of-lithium-ion/

I have posted about this before, but seriously, what sort of magic sauce is in these cells in this pack?

After sitting on a shelf all winter long, this 9 1/2 year old battery mowed my entire 3000 ft.² front yard of overgrown spring weeds and still had power left when I was done.

#EgoPowerPlus #EgoMower #ElectricMower #LithiumIon #batteries

I recently found my old power bank which I bought in early 2018ish…. It was functional and I checked it’s state of charge, it was running low so started reconditioning it for use. After a month of infrequent use the battery has swelled up and the case has literally flexed and deformed.

Thankfully I saw it when it was already at a lower state of charge and quickly removed it from my desk and safely discharged it on a low current load.

#psa #lithiumion #powerbank #diy #dissassembly

Battery tests sparked two fires at Tesla lab in Palo Alto

A laboratory in Palo Alto where Tesla Motors was testing lithium-ion batteries was shut down for about three weeks in January after the batteries caused a fire and damaged a water line in the company’s testing chamber

#tesla #PaloAlto #fire #Safety #automotive #auto #cars #transportation #lithiumion #battery

https://www.paloaltoonline.com/technology/2026/02/10/battery-tests-sparked-two-fires-at-tesla-lab-in-palo-alto/