I had to replace my UPSs a few weeks ago on short notice due to hardware failure, and I ended up getting a few LiFePO4 ones as a stopgap since they were on sale and I’d always wanted to try them. So far, so good. Curious if anyone else has switch to lithium UPSs from lead-acid and how that’s going for you.
I have a big 20Ah, 48v e-bike battery that I’ve used with a sine-wave inverter for standby power, and it’s a bit over 11 years old and going strong. So, as far as the batteries in these are concerned, I am cautiously optimistic that they’ll last close to the 10 years they’re advertised as. The electronics and inverter…we’ll see, I guess.
Bonus question: While we’re on the subject, has anybody tried those drop-in replacement 12V LiFePO4 batteries for regular UPS’s? Supposedly, it says the BMS in them can work with the lead-acid chargers in UPSs and safely charge them, but I’m not sure I trust that.
I see no reason why they would be worse, other that the initial purchase price.
That was more or less my thought. Once I gamed the discounts and coupon codes I had, they were actually less expensive than the lead-acid ones I was originally going to get (unfortunately these do not have the serial monitoring connection which is why they’re still a stopgap).
I guess my main concern is if the charge controller and such are more prone to failure than in their lead-acid counterparts.
Suppose I can deal with lack of monitoring for a few months and see how these fare.