Permobil VoltPro Mode D'emploi page 14

American English
WARNING!
Incompatible with non-rechargeable batteries
Only charge lead acid rechargeable batteries with your battery charger. If
you charge non-rechargeable batteries with your battery charger, the
batteries can explode and cause bodily harm.
WARNING!
Overheated battery charger
Do not cover the charger. If you do, the charger can become overheated
which can damage the charger and/or melt the plastic housing. If the
housing becomes damaged the electronics can become exposed and
give you a high voltage shock.
WARNING!
Overheated battery charger
If the charger becomes overheated, you can get burned.
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Safety