1.Characteristic(@25 degree)

2.Test Requirement 

2.1 Standard test condition 

Battery Pack to be tested should be new battery pack within one month after shipment from our factory and the battery pack should not be cycled more than five times before the test. Unless otherwise specified, test and measurement should be done under these conditions:

Temperature : 15~25 degree

Relative Humidity: 45%~75%RH

Atmospheric Pressure : 86kPa~106kPa

2.2 Test & Measurement Equipment Requirement

Dimension Measurement Instrument :

1)The dimension measurement shall be implemented by instruments with equal or more precision scale of 0.01mm.   

2) Battery test system should have current accuracy within +/- 0.1%, voltage accuracy within +/- 0.5% , & time accuracy within +/- 0.1%.

3) Temperature measurement accuracy of instruments should be within +/- 0.5 degree.

4) Voltmeter:

Standard class specified in national standard or more sensitive class, with internal impedance not less than 10 KΩ.

5) Ammeter:

Standard class specified in national standard or more sensitive class. Total resistance including ammeter and wire is less than 0.01Ω.

6) Impedance shall be measured by a sinusoidal alternating current method (AC 1kHz LCR). Resistance is not a constant value according to the change of temperature and state of charge, and related to lead length and capacity.

7) All test equipments and measuring instruments should be passed inspection of calibration organization.

2.3 Standard charging method 

At standard test condition, charge battery pack with standard charge current (0.2C5A) under constant current mode to charge ending voltage, then charge battery pack with charge ending voltage under constant voltage mode till charge current declines to 0.02C5A or less.

2.4 Appearance Test Standard

There shall be no such defect as scratch, flaw, crack, rust, leakage, or which may adversely affect commercial value of battery.

3. Electrical properties

3.1 Capacity @ 0.2C5A

After standard charging, laying the battery pack 0.5~1.0h, then discharging at 0.2C5A to ending voltage, record the discharging time.

Criteria:  above 300min

3.2 Capacity @ 1C5A

After standard charging, laying the battery pack 0.5~1.0h, then discharging at 1C5A to ending voltage, record the discharging time.

Criteria:  above 54min

3.3  Discharge at low temperature

After standard charging, laying the battery pack at -20+/-2 degree for 16h, then discharging at 0.2C5A to low temperature discharge ending voltage, record the discharging time.

 Criteria:  above 180min

3.4 Discharge at high temperature

  After standard charging, laying the battery pack at 60 +/- 2 degree for 2h , then discharging at 0.2C5A to ending voltage, record the discharging time.

 Criteria:  above 270min

3.5  Cycle Life

After standard charging, laying the battery pack 0.5~1.0h, then discharging at 0.2C5A to ending voltage,laying the battery pack 0.5~1.0h again, Repeat these steps above till two consecutive discharging time less than 210 minutes,record the cycle count.

Criteria:  above 800times

3.6 charge retention

After standard charging, laying the battery pack 28 days, then discharging at 0.2C5A to ending voltage, record the discharging time.

Criteria:  above 270 min

4.Environmental Suitability 

4.1  Constant Damp Heat Test

After standard charging, keeping the battery pack in environment of 40 +/- 2 degree / 90%~95%RH for 48h, then laying the battery pack in standard test condition for 2h.

Criteria: No explosion or smoking.

4.2  Vibration Test

After standard charging, fix the battery pack to vibration table, vibrate the battery pack in each axis of  X, Y, Z with frequency sweep rate of 1oct/min for 30 minutes under the vibration frequency and amplitude of both 10Hz~30Hz/0.38mm & 30Hz~55Hz/ 0.19mm.

Criteria: No explosion, smoking or leakage. Battery pack's voltage not lower than rated voltage.

4.3 Continuous Shock Test

After standard charging, fix the battery pack to shock table, shock the battery pack in each axis of X,Y,Z with these condition:

Acceleration :100m/s2

Pulse lasting time :16ms

Shock times per minutes :40~80 times

Shock times :1000+/-10 times

Criteria: No explosion. No smoking. No leakage.

5. Safety Characteristic

These safety Characteristic test is applied only to the cell used in this battery pack.

5.1  Thermal shock

Put the battery pack in the oven. Raise the temperature of the oven with 5 +/- 2 degree per minute to 130 +/- 2 degree and lasts 30 minutes.

Criteria: No fire, no explosion.

5.2 Over Discharge

Discharge the battery pack with constant current of 0.2 C5A to discharge ending voltage, then connect the battery pack to  external load of 300 ohm for 24 hours.

Criteria: No fire, no explosion, no smoke, no leakage.

5.3  Short Circuit

After standard charging, connect the anode pole to cathode pole of the battery pack's discharge terminal by lead with impedance less than 100mOhm, keep 1 hour.

Criteria: No fire, no explosion, no smoke, no leakage.

5.4 Over Charge

Charge the battery pack with constant current of 0.2 C5A to charge ending voltage, then charge the battery pack with 10V of charge ending voltage,and with the constant voltage 10 hours,or until the cell voltage will not rise .

Criteria: No fire, no explosion.

6. Storage and Shipment Requirement 

Battery pack must be charged every three months when long term storage, please charge the battery pack with standard charging current for 0.5h~1h to keep 40%~60% state of charge.

7.Charge the Battery Pack

1) Please charge the battery pack with matched specified charger, and connect them in the way required by the specification of the charger.

2) Do not cover anything over the battery pack when charging it, otherwise the heat will accumulate, that may cause declination of the performance of the battery pack and even cause leakage.

3) Charge the battery pack at 0~45 degree.

8. Warning and Caution

WARNING !   

1) Do not connect the battery pack's positive (+) and negative (-) poles reversed to charger or load, Do not connect the battery pack to charger's input power source (AC power supply).

2) Do not let the battery pack's terminals (+ and -) contact with unnecessary wire or any metal or stored them together, that may cause the battery pack short-circuit.

3) Do not drive a nail in battery pack, hit the battery pack with a hammer, stamp on or throw the battery pack.

4) Do not disassemble or alter the batteries outside structure.

5) Do not use the battery pack under blazing sun, otherwise may cause battery pack overheating then catch fire or disabler.

6) Do not put the battery pack into fire or heat the battery pack; do not store the battery pack in high temperature environment

7)  Do not submerge the battery pack in water or get wet in the rain, keep the battery in shady and cool place when stored.

8) Do not charge the battery continuously over 24 hour.      

9) Do not discharge the battery pack continuously when charging it.

10) When charging or discharging the battery pack, if you find any abnormal smell or noise, you must stop the charging or discharging at once, and contact the manufactory.

11) When using the battery pack out of range of 0~30 degree, the capacity may decrease, that doesn't mean the battery pack was failure.

12There is a protective circuit inside the battery to prevent contingency. Do not use the battery in the Electro static circumstances, (above 1000V), for it is easily destroyed the circuit board so that the battery doses not work and causes over-heated, distort, smoke or burning.

9.Warranty Period

Guarantee is 25 months since it is out of the factory. Any damage by incorrect use and not quality problem, even in its guarantee period, free service won't be provided by the manufacture.

10.Typical Fault and Exclusion Methods

11.Statement

1) If the battery is used on other instruments or operating conditions than those described in this document, please contact with your manufacturer for how to get the best performance, at least consult its maximum current, fast charge and special application. Doctor Power will take no responsibility for any accident

2) Doctor Power will take no responsibility for any accident when the battery pack is used under other conditions than those described in this Document.

3) Doctor power will inform, in a written form, the customer of improvement(s) regarding proper use and handing of the battery pack, if it is deemed necessary.

4)Doctor Power will take no responsibility for any accident when the battery pack is disassembled that isn't subject to Doctor power approval. 

5)Please tell the parameters of the BMS or/and charger, If they aren't provided by Doctor Power. We will check the matchable quality between the BMS/charger and the battery. If you don't provide it, Doctor power will take no responsibility for any accident.

6) The loss caused by force majeure should be implemented according to relevant laws and regulation

7)Any of the matters not mentioned in the specification, subject to mutual consultation

Please comfirm the specification timely after got it. If you haven't confirmed it after got specification within three days, it shows the default content of the specification.