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My UPS (APC) has faulty batteries (again). 3 years old, already fried. I don't mind the poor capacity of the PbAc batteries but this life cycle is horrible (2-3y tops).

Can I replace them with equivalent LiFe batteries like the ones you find on Amazon and such with the same form factor?

Or are there LiFePo4 UPS available in Europe?

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[–] Blue_Morpho@lemmy.world 10 points 1 month ago* (last edited 1 month ago)

I've done it successfully for two Tripplite 1500va and two APC 750va UPS's. They've been running for over 4 years now.

I bought a lifepo4 that specifically said it had a lead acid drop in replacement BMS (battery management system).

The only problem I have had was when I had a two day power outage. After running to complete drain ( and they lasted over 2x longer than my older lead acid), the Trupplites wouldn't charge up after power was restored. I had to pull the batteries and charge them outside the ups to get everything working again.

Under normal use they have worked great.

Lifepo4 works fantastic as a drop in because the peak charge of lead acid is only 80% charge of lifepo4. This means that while you don't get full capacity out of the lifepo4, it never fully charges which dramatically increases the lifepo4 lifespan.