Batteries self discharge fastest when they are full, and slower when they are less full - so I highly doubt any issues will arise after 2 months as long as you started with at least 20% charge.DaveinOlyWA said:And it should be minimal. Self discharge on lithium is like 5% per month so it can sit but discharge is not linear so u will have issues when sitting more than about 2 months or so
The recommended lithium storage charge is ~40% SOC.Lead Acid 4% to 6% per month
Nickel Cadmium 15% to 20% per month
Nickel Metal Hydride 30% per month
Lithium 2% to 3% per month
There is no shuttle-based self-discharge reaction in the Lithium Ion cell like that found in the NiMH and NiCd. As the cell ages, the self-discharge eventually becomes zero. Initially the cell suffers from irreversible capacity loss. This is a reaction of the electrolyte with the the active components if the cell. It occurs more rapidly with increasing temperature and cell voltage. For this reason, cells should be stored at 24C or less and between 30-50% state of charge. The lower limit is chosen because they are often stored in packs witch circuitry that demands a small drain on the battery. When one considers the circuitry needed for li-Ion, it becomes the most important source of self-discharge.
For higher quality LiCo/LiPo, yes. Low quality LiPo, not so much.palmermd said:Self discharge is ZERO after the first few cycles are performed.
AndyH said:For higher quality LiCo/LiPo, yes. Low quality LiPo, not so much.palmermd said:Self discharge is ZERO after the first few cycles are performed.
palmermd said:AndyH said:For higher quality LiCo/LiPo, yes. Low quality LiPo, not so much.palmermd said:Self discharge is ZERO after the first few cycles are performed.
Are you suggesting the LEAF pack is high or low quality? You listed 2-3% self discharge.
driveleaf said:Well this is certainly interesting.
The car has spent the night in "Perry, Georgia" where the temperature is currently 43F.
And the charge has dropped from 75% to 25%.
No miles are being reported as driven from Carwings yet. But I'm not so sure that the battery lost 50% of it's charge just sitting in the cold.
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