I got this from a note together with Xray's battery packs.
"Cycle the battery pack before using for the first time."
Set the charge current to 1/10th of the capacity.
-in your case, 140mAh
Charge for 14-16hours.(restart your charger if it peaks or set the trickle charge to be at 120mA
After the 14-16hours of charge, Let the pack "rest" for 1 day.
Then discharge the pack @ the capacity of the pack
-in your case, 1.4A
Set the cut off voltage to 0.9V. this equal 7.2V for you.
After discharging, Let the pack rest for 6 hours.
After all these, your pack is ready for use. You can charge @ 1.4Amp and use it in your car.
Hope this answers your questions and doubts.
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