search for: 400ah

Slightly OT, but I think this is of possible interest to many of you, I need to get a UPS for my asterisk box. They are rated in VA but I can't quite figure out how that converts to real life. I have a PIII-800 box with two X100P and one TDM400P plus graphics adapter, an IDE hard drive etc. Will a small 400VA box be enough for this? tia

...to a few days a year. They may see one or two deep discharges a year. If I get five years out of them, that's great! I calculated roughly 3.5kWh of usable capacity for these two wired in parallel. Running with the NAS off is maybe 5A from the DC side of things, which is a really low load for a 400Ah battery bank. They are very heavy, but I already had a heavy duty storage rack next to the load, so that's not a problem in this case. Also, the voltage range for 12V lead acid batteries is still better supported than LiFePO4. Right now, there are still more (and lower cost) chargers and invert...

...ey may see one or two deep > discharges a year. If I get five years out of them, that's great! > > I calculated roughly 3.5kWh of usable capacity for these two wired in > parallel. Running with the NAS off is maybe 5A from the DC side of things, > which is a really low load for a 400Ah battery bank. They are very heavy, > but I already had a heavy duty storage rack next to the load, so that's not > a problem in this case. Also, the voltage range for 12V lead acid batteries > is still better supported than LiFePO4. Right now, there are still more > (and lower cost)...

On 5/16/24 08:59, Jim Klimov via Nut-upsuser wrote: > I agree with earlier posters, such documentation can help future > tinkerers. There is probably more than just one to hold the hand and > walk through the ordeals :) > > Perhaps a new page at https://github.com/networkupstools/nut/wiki > <https://github.com/networkupstools/nut/wiki> can be a good location... >