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Cake day: June 19th, 2023

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  • Sure:

    • Proxmox backs up all my VMs/CTs nightly to the proxmox backup server I run as a VM with an external HDD attached to it. This keeps around 30 versions with a retention policy so I can go back pretty far if needed. These are full bootable images and include everything.

    • Restic (using Backrest to manage it), runs on any VMs/CTs with critical data, and backs up to Backblaze B2 every night as well, this is a more limited choice of the critical files that I’d need. Similar retention policy as the proxmox backup.

    With both I try and do some full restores every month or two and test things out.












  • Cell quality is important. You want to be using known good quality cells like those from Panasonic, Samsung, LG, etc…

    How you manage temperature, charge and discharge is also really important, dendrite growth can cause cell failure in time. Charge temperature is extremely important. So you want to make sure you’re using a smart programmable BMS where you can set up all the protections properly. Ideally one with as many temperature probes as you can find, 4 is good, 8 is better and some will have that many.

    Otherwise making sure nothing can short out internally is important too, but it sounds like you’re putting some thought into that. Most critical IMO from what I’ve seen on pre-made battery packs is making sure your series banks are well insulated from each other and have no chance of vibration causing the cells to wear through their heatshrink and touch each other.