Hydrometer Temperature Correction
HYDROMETER TEMPERATURE CORRECTION
| Battery electrolyte temperature °C (°F) | Add to specific gravity reading |
|---|---|
| 71 (160) | 0.032 |
| 66(150) | 0.028 |
| 60(140) | 0.024 |
| 54(130) | 0.020 |
| 49(120) | 0.016 |
| 43(110) | 0.012 |
| 38 (100) | 0.008 |
| 32 (90) | 0.004 |
| 27 (80) | 0 |
| 21 (70) | -0.004 |
| 16(60) | -0.008 |
| 10 (50) | -0.012 |
| 4 (40) | -0.016 |
| -1 (30) | -0.020 |
| -7 (20) | -0.024 |
| -12(10) | -0.028 |
| -18(0) | -0.032 |
ADJUSTED APPROXIMATE CHARGE CONDITION
| Corrected specific gravity | Approximate charge condition |
|---|---|
| 1.260-1.280 | Fully charged |
| 1.230 - 1.250 | 3/4 charged |
| 1.200 - 1.220 | 1/2 charged |
| 1.170 - 1.190 | 1 /4 charged |
| 1.140-1.160 | Almost discharged |
| 1.110-1.130 | Completely discharged |