Forum Discussion
srschang
Jan 08, 2021Nomad
ticki2 wrote:
This is probably a dumb question , forgive my ignorance . I have been reading about these new technology batteries , lithium and now Sio2 that can be discharged to 80 and 100 percent . How do they power equipment that requires 12v to operate like a furnace sail switch , at this state of DOD ?
The voltage curve on a lithium battery is way different then a lead acid. The lead acid voltage drops steadily as the charge is depleted. The lithium voltage stays virtually level throughout the discharge, then drops off a cliff when the battery is near completely discharged. That's why a volt meter works well on a lead acid battery to measure the charge, but on a lithium a voltage measurement won't help determine state of charge.
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