New battery may come in discharged condition, so please recharge the battery fully before using the CleanMate. When you install the battery into CleanMate unit, make sure the battery seat securely in the battery compartment and makes good contact inside.
The initial charging time might be short, but after a complete cleaning cycle, the normal battery charging will become about 2 1/2 to 3 hours. If the battery charging time is short after many recharging cycles and running time is still short (less than 30 minutes), then battery may be over drain. Please recharge the battery for 3 days continuously without unplug AC charger.
If short CleanMate running time problem persists, the problem may be cause by a defective battery, a defective AC charger or the malfunction of CleanMate unit itself. CleanMate uses 14.4V NiCd on QQ1, and 14.4V NiMH battery on QQ2. The normal output voltage of CleanMate AC charger adapter is in 20~22V range. You can measure voltage of battery, it should not be less than 10V. Fully charged battery voltage should be between 14.4 to 16.5V.
Do not leave the battery in drained condition for a long period of time. Charge the battery as soon as you can after the cleaning is done. Leaving battery in drained condition for too long will damage the battery.
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Subject: The run time is short even I just recharge battery. Do I have problem on battery? 
2008-11-14, 7:44 pm