Heartway Medical Products S11 Zen User Manual page 20

Recharge battery only when the key is in off position. When indicator is in low status, this confirms the battery
needs recharging.
Note:
 Always charge your batteries in well ventilated areas.
 The charger is intended for indoor use only. Protect from moisture.
 For maximum performance, it is recommended that you replace both batteries at the same time if the
batteries are weak.
 If the vehicle will not be used for a long period of time, arrange to have the batteries recharged at least once
every month to avoid deterioration of the batteries..
According to the battery type and condition of the batteries, they usually can be fully charged in 4-10 hours.
This will be indicated when the status light in the battery charger side panel turns green. Charging the battery
longer than necessary will not harm the battery. We recommend that you charge the batteries for 8 to 10 hours
after daily use.
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