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Since I have so many 26650 LiFePO4 batteries, I am going to see if I can build a battery roughly the same size as the 3 lead acid batteries in the mower now.
What We Are Replacing
The battery we are replacing:
| Lead Acid Battery | |
| Width | 149 mm |
| Length | 3*66 = 198 mm |
| Height | 117 mm |
Configuration
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12S5P (36 V)
4s?P
26650 batteries size
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is standardized and it is:
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- 26.5 mm (1.04 inches) in diameter, or ~26 mm.
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- 65.4 mm (2.57 inches) in length, or ~65 mm.
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117 mm
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This configuration would fit the existing battery footprint (slightly smaller) but may grow a bit when we add cell spacers and bms.
| Width | 26*5 = 130 mm |
|---|---|
| Length | 65*3 = 195 mm |
| Height | 26*4 = 104 mm |
Another Configuration
| Width | 26*5 = 130 mm |
|---|---|
| Length | 26*12 = 312mm |
| Height | 65mm |
Battery Management System
Daier 6S-13S 7S 12S 25A LiFePo4 Life 18650 Battery Cell BMS Charger Protection Board 3.2V
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Total Capacity: 5+Ah since my cells are roughly 1Ah cells.
Parts
| Part# | Image | Description |
|---|---|---|
P360080U 90604959 |
| Charger |
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