For questions not mentioned here, please consult your retailer. He will be happy to provide you with further assistance.

Which charger goes with which battery?
This can be worked out using a simple formula: The battery's Ah number divided by 10 gives the charger's ampere rating; this device charges a battery within 12 hours (overnight), when the battery is 50% discharged.

Can a maintenance-free battery be charged, as well?
Yes, this is possible. However, charging needs to be monitored.
CAUTION: Never charge a battery over 14.6V, since batteries form gases and cannot be refilled with distilled water. Do not charge for more than 8 hours.

Does the battery have to be disconnected, in order to be charged?
For safety reasons, we recommend this for all devices! If charging goes unsupervised, the vehicle voltage can reach such a high value that the on-board electronics becomes damaged! Prior to charging the battery, the potentially available battery plug has to be removed. When charging, the battery can accumulate gas and if leaking acid splatters it can corrode or cauterize the engine's plastic parts.

Can a GEL battery be charged, as well?
Yes, but only using charging devices specially designed for gel batteries. A charging device for gel batteries should not exceed the end voltage of 14.2 Volts.

How can I keep my battery in hibernation?
Batteries may remain continually connected only to charging devices with an electronic charge maintenance function. Conventional charging devices cannot and must not remain continually connected, since a residual current continually flows, thereby leading to overcharging (gassing) of the battery.

Which characteristics do our battery charging devices have?
• Standard devices: W characteristic charging
• Electronic devices with charge maintenance: WoU characteristic charging
• Electronic devices with completely controlled charging curve: IoIUoU characteristic charging

When the charging is discontinued?
Charging is discontinued only with electronic battery charging devices depending on the battery type and after achieving the end voltage.

How are SL and SLS version charging devices protected?
The charge current can be set using the switch, from 1 -2 Amps. The digital voltmeter displays the charging current or voltage. An aluminium fuse (80A and 100A) at the back of the charging device blows when polarities are reversed or in the event of a short-circuit, and the automatic circuit breaker mounted in the top panel for the event of overheating.

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