to charge a large battery, such as a marine deep cycle battery, that was not fully charged, you may lose some of the battery’s capacity. This would cause the large battery to be unable to hold a charge and become useless. Therefore, we do not recommend charging a large battery with this unit.
NOTE: The maintain mode technology utilized in Schumacher maintainers allows you to safely charge and maintain a healthy battery for extended periods of time. However, problems with the battery, electrical problems in the vehicle, improper connections or other unanticipated conditions could cause excessive current draws. As such, occasionally monitoring your battery and the charging process is recommended.
| Battery Condition | |
2 Amp, 12 Volt Battery | 50% Discharged | 100% Discharged |
Ampere Hour Battery | Approximate Average Charge Time in | |
Capacity | Hours | |
10 | 3.2 | 6.2 |
12 | 4.0 | 7.5 |
20 | 6.4 | 12.4 |
13. CALCULATING CHARGE TIME
Use the following tables to more accurately determine the time it will take to bring a battery to full charge.
14. MAINTENANCE INSTRUCTIONS
14.1After use and before performing maintenance, unplug and disconnect the battery charger (see sections 6, 7 and 8).
14.2Use a dry cloth to wipe all battery corrosion and other dirt or oil from the battery clips, cords, and the charger case.
14.3Ensure that all of the charger components are in place and in good working condition, for example, the plastic boots on the battery clips.
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