**A fully charged 100Ah battery will last 100 hours with a 1 amp draw. To calculate how long your battery will last on a 1 amp draw, divide the battery capacity after its DoD limit by 1. **

Here’s a short but to-the-point guide on how long will a battery last with a 1 Amp draw? The answer to this question will depend on the size of your battery (Ah) and its depth of discharge limit (DoD).

## Introduction To Batteries

Batteries come with different capacities of power hold, which you can check on the specs sheet of your battery or it’ll be written on the battery body

**For Example:** 12v 100Ah, 12v 200Ah etc….

**Amp-Hour** is the total current storage capacity of a battery.

### Battery DoD limit

Some types of batteries are only designed to be discharged only 50%, discharging them below 50% will damage the battery internal cells which as a result will decrease the battery lifespan and in some cases, if you’ll discharge your battery to 100% it may never be able to store power again

Here’s a chart with different types of batteries with their recommended depth of discharge limit

Battery Type | Depth Of Discharge Limit |
---|---|

Lead-acid | 50% DoD |

AGM | 50% DoD |

Gel | 50% DoD |

Lithium-ion | 100% DoD |

LiFePO4 | 100% DoD |

_{Table: Battery type and its depth of discharge limit}

**Note!** to get the exact DoD limit of your battery ask the manufacturer of it will be mentioned in the battery specs.

## How Long Will A Battery Last With A 1 Amp Draw – Chart

Here’s a chart on how long will any size battery with different DoD limits last with a 1 amp draw

Battery Size | Long will a Lead-acid (50% DoD) type battery last with 1 Amp Draw? | Long will a Lithium (100% DoD) type battery last with 1 Amp Draw? |
---|---|---|

3ah | 1.5 hrs | 3 hrs |

5ah | 2.5 hrs | 5 hrs |

6ah | 3 hrs | 6 hrs |

7ah | 3.5 hrs | 7 hrs |

9ah | 4.5 hrs | 9 hrs |

10ah | 5 hrs | 10 hrs |

12ah | 6 hrs | 12 hrs |

15ah | 7.5 hrs | 15 hrs |

20ah | 10 hrs | 20 hrs |

25ah | 12.5 hrs | 25 hrs |

30ah | 15 hrs | 30 hrs |

32ah | 16 hrs | 32 hrs |

50ah | 25 hrs | 50 hrs |

60ah | 30 hrs | 60 hrs |

65ah | 32.5 hrs | 65 hrs |

70ah | 35 hrs | 70 hrs |

80ah | 40 hrs | 80 hrs |

90ah | 45 hrs | 90 hrs |

100ah | 50 hrs | 100 hrs |

105ah | 52.5 hrs | 105 hrs |

110ah | 55 hrs | 110 hrs |

115ah | 57.5 hrs | 115 hrs |

120ah | 60 hrs | 120 hrs |

130ah | 65 hrs | 130 hrs |

140ah | 70 hrs | 140 hrs |

150ah | 75 hrs | 150 hrs |

160ah | 80 hrs | 160 hrs |

170ah | 85 hrs | 170 hrs |

180ah | 90 hrs | 180 hrs |

190ah | 95 hrs | 190 hrs |

200ah | 100 hrs | 200 hrs |

205ah | 102.5 hrs | 205 hrs |

210ah | 105 hrs | 210 hrs |

220ah | 110 hrs | 220 hrs |

230ah | 115 hrs | 230 hrs |

240ah | 120 hrs | 240 hrs |

250ah | 125 hrs | 250 hrs |

260ah | 130 hrs | 260 hrs |

270ah | 135 hrs | 270 hrs |

280ah | 140 hrs | 280 hrs |

290ah | 145 hrs | 290 hrs |

300ah | 150 hrs | 300 hrs |

400ah | 200 hrs | 400 hrs |

500ah | 250 hrs | 500 hrs |

_{Chart: How long will a battery last with 1 amp draw?}

### Summary

- The battery will last between
**3-300 hours**with a 1 amp draw. the exact value will depend on the size of the battery and its depth of discharge limit (DoD)