Can i charge the st16 using say an in-car usb socket? Whats the safe max voltage? Any advice on charging it other than from the default charger?
Thanks.
Thanks.
Charging the st16 via other sources
- Thread starter hueman
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- Joined
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- Reaction score
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I use a standard USB phone charger to do mine...
It charges on 5V USB power. You can actually extend use in the field with a 5V USB power brick and keep it charging while in use.
PatR
Premium Pilot
As the battery is a single cell 3.6v, 8700mA lithium ion, ideally we want to charge one at the same input voltage, however the battery protection circuit built into the battery compensates for slightly higher voltage input. The lithium ion cell design is such that best charge rates are performed at less than 1C, with ~0.7C being ideal. The battery protection circuit also limits input when higher charge rates are used by terminating the charge cycle when excess heat from a high charge rate is generated. Higher amperage charge rates generate more heat so the protection circuit will terminate the charge before a battery has been fully charged. Under those conditions a li-on battery will indicate it was fully charged at the end of the charge cycle but will not have reached full capacity.
Most all cell phone and tablet chargers are rated 2A or less, which is less than 0.7C, and work just fine for performing a faster charge than the factory charger.
Most all cell phone and tablet chargers are rated 2A or less, which is less than 0.7C, and work just fine for performing a faster charge than the factory charger.
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More in detail the battery consists of 3 single cell NCR18650PF 2900mAh in parallel ( following the label on the battery) , here the datasheet http://www.omnitron.cz/download/datasheet/NCR-18650PF.pdf .
The charging current is 1375mAh for each cell ( datasheet ) , so I suppose the charge current for the st16 battery can be max 1375mAh X 3 .
The charging current is 1375mAh for each cell ( datasheet ) , so I suppose the charge current for the st16 battery can be max 1375mAh X 3 .
5V at 3A will charge the ST16, but if the ST16 is turned on at the same time, it will want more.
