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Lithium Ion Battery Pack (18650)
Assumptions
18650 Battery Assumptions
| Specification | Value |
|---|---|
| Nominal Voltage | 3.7v |
| Max Voltage | 4.2v |
| Cutoff Voltage | 3.0v |
| Capacity | 2500mAh |
Configuration Options
3S (9V-12.6V)
Pros:
- Can charge it from the car
- Works with most chargers (solar and car chargers)
Cons:
- Would not get full capacity when using with an inverter. The inverter would shut off at 10.5v.
4S (12V-16.8V)
Pros:
- Would be able to use the full capacity of the battery when converting to AC.
Cons:
- Would need to step down the voltage to 12v which may introduce some losses.
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- Could not charge it off of the car
Battery Pack
3S30P - 60Ah
| Specification | Value |
|---|---|
| Nominal Voltage (3 x 3.7v) | 11.1v |
| Max Voltage (3 x 4.2v) | 12.6 |
| Min Voltage (3 x 3.0v) | 9v |
| Cells in Series for Voltage | 3 |
Parallel Cells to Get Capacity 60Ah/2.0Ah | 30 |
| Total Cells Required | 90 |
Dimensions (mm) | (long pack) =18*3 x 18*30 x 65 =54mm x 540 mm x 65mm (3 rows on 30 cells) =18*9 x 18*10 * 65 =162 x 180 x 65 4.25” x 10.6” x 2.6” |
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Using rePackr.com:
Pack Dimensions
| Dimension | mm | inches |
|---|---|---|
| Width | 108 mm | 4.25" |
| Length | 270 mm | 10.6" |
| Height | 65 mm | 2.6" |
Other Possible Packs
Battery Spec 3S40P - 80Ah
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| Specification | Value |
|---|---|
| Nominal Voltage (4 x 3.7v) | 14.8v |
| Max Voltage (4 x 4.2v) | 16.8v |
| Min Voltage (4 x 3.0v) | 12.0v |
| Cells in Series for Voltage | 4 |
Parallel Cells to Get Capacity 40Ah/2.0Ah | 20 |
| Total Cells Required | 80 |
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Test Results of Batteries
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