PowerWalker VFI 20000TP 3_3 BE - Manual (Page 36)

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Exchanging batteries
Warning!
If a battery cabinet has been disconnected and is to be reconnected, the battery isola-
tor may only be reconnected after you have made certain that voltage with the cor-
rect polarity is present on both sides of isolating device.
Connecting external battery cabinet
Warning!
Before replacing batteries, make sure that those to be installed are fully charged.
Recharging batteries
Warning!
When recharging, observe the indications on the packaging.
5.7 Handling the batteries
Warning!
Batteries are a potential source of danger due to their electrical charge and chemical
composition. Therefore observe the battery handling instructions of the manufacturer.
These usually can be found in the material which accompanies the shipment.