The mathematics, and reasoning seems right. Else, I do not think the lithium
batteries can be fully discharged. I think there is a small circuitry in each lithium
cell to prevent recharge after a total discharge.
This is what I found:
Safety requirements
If overheated or overcharged, Li-ion batteries may suffer thermal runaway and cell rupture.[56] In extreme cases this can lead to combustion. Deep discharge may short-circuit the cell, in which case recharging would be unsafe.[57] To reduce these risks, Lithium-ion battery packs contain fail-safe circuitry that shuts down the battery when its voltage is outside the safe range of 3–4.2 V per cell.[35][47] When stored for long periods the small current draw of the protection circuitry itself may drain the battery below its shut down voltage; normal chargers are then ineffective. Many types of lithium-ion cell cannot be charged safely below 0°C.[58]
If overheated or overcharged, Li-ion batteries may suffer thermal runaway and cell rupture.[56] In extreme cases this can lead to combustion. Deep discharge may short-circuit the cell, in which case recharging would be unsafe.[57] To reduce these risks, Lithium-ion battery packs contain fail-safe circuitry that shuts down the battery when its voltage is outside the safe range of 3–4.2 V per cell.[35][47] When stored for long periods the small current draw of the protection circuitry itself may drain the battery below its shut down voltage; normal chargers are then ineffective. Many types of lithium-ion cell cannot be charged safely below 0°C.[58]
On Sat, Mar 31, 2012 at 7:30 PM, Michael Mccomb <mccomb.michael@yahoo.com> wrote:
it's a question.... if one has a 400ah battery bank of lead acid batteries and one can only pull about 40% from them then one is only getting 160ah of actual work right.... wouldn't the equivalent batteries of a lithium type only need to be 160ah to get that same amount of useful work because lithium batteries can be completely discharged?
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