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| Specification | Value |
|---|---|
| Make | Motomaster Nautilus |
| Model | 010-2799-4 |
| Capacity | 80Ah(20h) |
| Group | 27 |
Charging Our Battery
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| Charging Parameters | Value |
|---|---|
| Battery Type | SLA (includes Flooded) |
| Speed | Fast (4A) |
| Max Voltage | 14.4v |
| Current | 4A |
Charging Steps
Permanent capacity loss can be minimized with operating at a moderate room temperature and a float voltage of 2.25–2.30V/cell (13.5-13.8V).
Discharge Test
A discharge test was performed using the SkyRC Max B6 charger. In order to get the test to run to completion, we had to disable the Capacity Cut off and the Safety Timer (See appendix).
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| Test | Final Voltage | Capacity (mAh) | % of Capacity Capacity if 10.8v is 80% Capacity/64000*100 | Changes | |
|---|---|---|---|---|---|
| Oct 27, 2019 | 10.16 | 13,392 | 17%- | Added distilled water | |
| Nov 1, 2019 | 8.69 | 22,226 | 28%- | Added more distilled water | |
| Nov 7, 2019 | 10.0 | 24,543 | 31% | - | Shook |
| Nov 12, 2019 | 10.5 | 27,291 | 34%43% | Shook | |
| Nov 18, 2019 | 10.5 | 29,315 | 37%46% | Shook | |
| Nov 24, 2019 | 10.5 | 30,847 | 39% | 48% | Shook |
| Nov 30, 2019 | 10.6 | 32,413 | 41%51% | Shook |
Questions
- Does a lead acid battery rated at 80Ah actually give you 80Ah??
This battery is rated to deliver at 80Ah over a period of 20h which translates to 4A/hour for 20 hours until it reaches 10.5v.
Conclusions
We managed to get our battery back up to a reasonable value about 40% of it's rated capacity and in the process discovered:
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