Parasitic Draw

- Note the battery reserve capacity. Refer to Battery Usage.
- Divide this number by 4.
- Compare this to the multimeter reading.
- The current drain should not exceed this number.

Example: If a battery has a reserve capacity of 100 minutes, the current drain should not exceed 25 milli-amps. If the vehicle has 2 batteries, add the reserve capacities together and divide this total by 4. Battery Electrical Drain/Parasitic Load Test