Model：7.4V-4000mAh 
Specification：（Customization voltage/capacity/ size/and PCB by customer requirement ） 
·    Cell model：15107121·          Cell voltage：3.7V  Cell capacity：4000mAh
·   Battery Pack capacity: 4000mAh                Battery pack power：29.6Wh 
·   Battery pack size：3.0*107*121mm 
·   Max discharge current：＞2000mA（Based on customer requirement） 
·   Peak discharge current：＞4000mA（Based on customer requirement） 
·   Max charge current：＞0.2-0.5C（Based on customer requirement） 
· Cycle life time：＞500times
 
Function of PCB/PCM/BMS  
·                               Main IC：（Different solution use different IC） 
·                               Over charge protection： Connect charger between P+ and P- to charge battery to 4.2±0.05V(Based on customer requirement), the way to protect the battery is cut off the power.  
·                               Over discharge protection: Connect application between P+ and P- to discharge battery to 2.5±0.1V(Based on customer requirement), the way to protect the battery is cut off the power.   
·                               Short-circuit protection：when P+ and P- get short-circuit, PCB will cutoff the power in 5-50uS to protect the battery  
·                               Over current protection: when B- and P- voltage to（0.15±0.02V）,PCB will cut off the power in 5-26ms to protect the battery.  
Temperature function
·                               Discharge temp.：-10℃—60℃ 
·                               charge temp.：0℃—40℃ 
·                                Storage temp.：1year：-20℃—25℃ 
                                              3 months：-20℃—45℃ 
                                              1month：-20℃—60℃ 
Vibration requirement:
·                               Frequency：10-50-10HZ 
·                               Swing：1.5mm 
·                               Time：45min（No application）