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Acek94

Switching lead acid battery with Lithium ion?

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Posted · Original PosterOP

Ok, so I just picked up a UPS for $5 at a garage sale in my area. The thing looks in good condition and what not, all that it needs is a replacement battery. So the replacement battery for this is lead acid, and my question is, can the current charging circuit handle it if I get a lithium ion battery? 

Please move this thread if it isn't in the correct sub forum, I wasn't sure where to post it. :)

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The charging circuitry isn't such a big issue, but the discharging is.. If it discharges the lithium battery too far, then all hell breaks loose and your house will be on fire. If you want to pay a bit more and not worry too much about your house burning down, then get a lithium IRON battery (LiFePo4). At 3.3 volts nominal per cell, if you have a 4 cell LiFe battery then that's 13.2 volts. Almost the same as a 12 volt lead battery. That's what I'd do.


My PC CPU: 2600K@4.5GHz 1.3v Cooler: Noctua NH-U12P SE2 MB: ASUS Maximus IV RAM: Kingston 1600MHz 8GB & Corsair 1600MHz 16GB GPU: 780Ti Storage: Samsung 850 Evo 500GB SSD, Samsung 830 256GB SSD, Kingston 128GB SSD, WD Black 1TB,WD Green 1TB. PSU: Corsair AX850 Case: CM HAF X. Optical drive: LG Bluray burner  MacBook Pro, Hackintosh

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The charging circuitry isn't such a big issue, but the discharging is.. If it discharges the lithium battery too far, then all hell breaks loose and your house will be on fire. If you want to pay a bit more and not worry too much about your house burning down, then get a lithium IRON battery (LiFePo4). At 3.3 volts nominal per cell, if you have a 4 cell LiFe battery then that's 13.2 volts. Almost the same as a 12 volt lead battery. That's what I'd do.

How are some of you people so smart on these subjects, teach me your ways.


OS - Windows 8.1 Motherboard - ASUS M5A99FX Pro R2.0 Processor - AMD FX 8350 Black Edition RAM - 16GB 2x8 Crucial Ballistix Sport Graphics Card - Gigabyte Windforce 2 OC GTX 660 Power Supply - Corsair CX750M CPU Cooler - NZXT Kraken X60 Wireless Adapter - ASUS PCE-N15 PCI-E Adapter Fans - x3 Masscool blue LED 120mm Fans Case - Fractal Design Define R4

Monitor - Dell S2230MX 21.5-inch Keyboard - Logitech G105 Mouse - Logitech G602 Speakers - Logitech Z130 Headsets/Headphones - Tt eSports Shock, AKG K240, California Headphones Laredo Phone - iPhone 4S

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How are some of you people so smart on these subjects, teach me your ways.

One of my hobbies is radio controlled vehicles, mostly electric ones, so you have to know your stuff or you will get hurt. Just like with computers.


My PC CPU: 2600K@4.5GHz 1.3v Cooler: Noctua NH-U12P SE2 MB: ASUS Maximus IV RAM: Kingston 1600MHz 8GB & Corsair 1600MHz 16GB GPU: 780Ti Storage: Samsung 850 Evo 500GB SSD, Samsung 830 256GB SSD, Kingston 128GB SSD, WD Black 1TB,WD Green 1TB. PSU: Corsair AX850 Case: CM HAF X. Optical drive: LG Bluray burner  MacBook Pro, Hackintosh

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