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electrical:12v:deep_cycle_battery [2018/12/28 08:47] frater_secessus [lithium chemistries] corrected li-ion discharge voltages |
electrical:12v:deep_cycle_battery [2019/03/07 17:31] frater_secessus [LiFePO4] |
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- | In theory **LifePO4 lithium batteries** should be near perfect for boondocking. | + | In theory **LifePO4 lithium batteries** should be near perfect for boondockers who [[camping: |
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==== Non-LiFePO4 lithium-ion ==== | ==== Non-LiFePO4 lithium-ion ==== | ||
- | Non-LiFeP04 Li-ion [called " | + | Non-LiFeP04 Li-ion [called " |
There are hobbyists who build 4S packs and undercharge the cells to only 3.7v. This gives an operating range of 14.8v - 12v, a much better fit for nominal 12v systems. The downside is this configuration only uses 58% of the cells' capacity and will require more cells to achieve the same amount of Ah. | There are hobbyists who build 4S packs and undercharge the cells to only 3.7v. This gives an operating range of 14.8v - 12v, a much better fit for nominal 12v systems. The downside is this configuration only uses 58% of the cells' capacity and will require more cells to achieve the same amount of Ah. | ||
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+ | **7S builds** make a decent **24v bank**. | ||
+ | 24v banks in general could preclude [[electrical: | ||
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**Pro:** | **Pro:** | ||
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**Con:** | **Con:** | ||
* overcharging or physical damage can cause a runaway condition (ie fire) | * overcharging or physical damage can cause a runaway condition (ie fire) | ||
- | * voltage mismatch - | + | * voltage mismatch - FIXME |
- | Other lithium chemistries like **" | ||
- | 7S banks make a decent 24v bank. They are 29.4v fully charged and 80% discharged at 26.11v, compared to lead acid's 29.6v max voltage and 24.2v 50% DoD cutoff. | ||