Lawn mower batteries are typically either lead-acid or lithium-ion. Lead-acid batteries require a lower charging rate, between 1 and 4 amps. Lithium-ion batteries can be charged at a higher rate, up to 10 amps.
The charger will typically indicate the correct charging rate for the battery. If you are using a universal charger, you may need to consult the battery's documentation to determine the correct charging rate.
It is important to charge a lawn mower battery at the correct rate to avoid damage to the battery. Charging the battery at too high of a rate can cause it to overheat and rupture. Charging the battery at too low of a rate can cause it to become sulfated, which will reduce its capacity and lifespan.
Here is a table of recommended charging rates for lawn mower batteries:
| Battery Type | Charging Rate (Amps) |
|---|---|
| Lead-acid | 1-4 |
| Lithium-ion | up to 10 |
If you are not sure what type of battery your lawn mower has, you can check the battery's label or consult the mower's documentation.