# Battery - GRP9743150-23.1V 9750 mAh

<table><thead><tr><th width="299">Item</th><th>Specifications</th></tr></thead><tbody><tr><td><strong>Connecting mode</strong></td><td>6S 1P</td></tr><tr><td><strong>Nominal capacity</strong></td><td>9750mAh @ 0.2C Discharge</td></tr><tr><td><strong>Minimum capacity</strong></td><td>9500mAh @ 0.2C Discharge</td></tr><tr><td><strong>Nominal voltage</strong></td><td>23.1 V (Cell 3.85V)</td></tr><tr><td><strong>Open-Circuit Voltage</strong></td><td>26.1~26.4V (Cell 4.35~4.40V)</td></tr><tr><td><strong>Internal Impedance</strong></td><td>≤15.0mΩ</td></tr><tr><td><strong>Dimensions</strong></td><td>MAX (T*W*H): 68.0*49.5*115.0mm</td></tr><tr><td><strong>Pack weight</strong></td><td>954g (APPROX)</td></tr><tr><td><strong>Standard Charge</strong></td><td>1.95A CC ( constant current ) charge to 26.4V,then CV(constant voltage 26.4V) charge till charge current decline to ≤0.02C</td></tr><tr><td><strong>Rapid Charge</strong></td><td>Constant Current: 9.75A, Constant Voltage: 26.4V, 0.02C cut-off<br><strong>Note:</strong> rapid charging negatively affects the lifetime of the battery and the real capacity.</td></tr><tr><td><strong>Charging time</strong></td><td>Standard Charging: 7.5 hours (Ref.)<br>Rapid charge: 1.5 hours (Ref.)</td></tr><tr><td><strong>Standard Discharge current</strong></td><td>Standard current: 1.95A, end voltage: 19.2V</td></tr><tr><td><strong>Max Constant Discharge current</strong></td><td>Max Constant current: 29A end voltage: 19.2V</td></tr><tr><td><strong>High Rate Discharge</strong></td><td>≥11.07min<br>Standard Charge/rest 5min discharge at 48A to 19.2V</td></tr></tbody></table>

### Charging

1. **Charging current**

   Charging current should be less than maximum charge current specified in the Product Specification. Charging with higher current than recommended value may cause damage to cell electrical, mechanical and safety performance and could lead to heat generation or leakage.
2. **Charging voltage**\
   Charging shall be done by voltage less than that specified in the Product Specification 26.4V (Cell 4.40V). Charging beyond 26.7V (Cell 4.45V), which is the absolute maximum voltage, must be strictly prohibited:The charger shall be designed to comply with this condition.It is very dangerous that charging with higher voltage than maximum voltage may cause damage to the cell electrical, mechanical safety performance and could lead to heat generation or leakage.
3. **Charging temperature**\
   The battery shall be charged within 10°C\~45°C range in the Product Specification.
4. **Prohibition of reverse charging**\
   Reverse charging is prohibited. The battery shall be connected correctly. The polarity has to be confirmed before wiring, In case of the battery is connected improperly, the battery cannot be charged. Simultaneously, the reverse charging may cause damaging to the battery which may lead to degradation of battery performance and damage the battery safety, and could cause heat generation or leakage.

### **Discharging**

1. **Discharging current**\
   The battery shall be discharged at less than the maximum discharge current specified in the Product Specification, High discharging current may reduce the discharging capacity significantly or cause over-heat.
2. **Discharging temperature**\
   The battery discharge temperature is -20\~60°C, 10\~45°C environment suggested when discharge with large current,small current discharge suggested under < 10°C or > 45°C, Discharged under too low or too high temperature could lead to battery failure or other conditions.
3. **Over-discharging**\
   It should be noted that the battery would be at over-discharged state by its self-discharge characteristics in case the cell is not used for long time. In order to prevent over-discharging, the battery shall be charged periodically to maintain between 21.6V and 23.4V.Over-discharging may causes loss of cell performance, characteristics, or battery functions.The charger shall be equipped with a device to prevent further discharging exceeding a cut-off voyage specified in the Product Specification. Also the charger shall be equipped with a device to control the recharging procedures as follows:\
   The battery pack shall start with a low current (0.01C) for 15-30 minutes, i.e.-charging, before rapid charging starts. The rapid charging shall be started after the (individual) cell voltage has been reached above 3.0V within 15-30 minutes that can be determined with the use of an appropriate timer for pre-charging. In case the (individual) cell voltage does not rise to 3.0V within the pre-charging time, then the charger shall have functions to stop further charging and display the cell/pack is at abnormal state.

### Storage

1. **Storage condition**
   1. The battery shall be stored within -20°C\~35°C range environmental condition.
   2. If the battery has to be stored for a long time (Over 3 months), the environmental condition should be: Temperature: 23±2°C, Humidity: ≤75%RH
   3. The voltage for a long time storage shall be 22.2V\~23.1V range. Full charged storage is prohibited.
2. **Activate method**\
   Please activate the battery once every 3 months according to the following method:\
   0.2C charged to 26.4V, rest 5 min, then 0.2C discharged to with 19.2V, rest 5 min, 0.2C charged to 23.4V.

### Handling of Cells

1. Since the battery is packed in soft package, to ensure its better performance, it’s very important to carefully handle the battery.
2. **The protection of soft aluminum foil**
   1. The soft aluminum packing foil is very easily damaged by sharp edge parts such as Ni-tabs,pins and needles.
   2. Don’t strike battery with any sharp edge parts.
   3. Trim your nail or wear glove before taking battery.
   4. Clean worktable to make sure no any sharp particle.
3. **Folding edge**
   1. The folding edge is form in battery process and passed all hermetic test.
   2. Don’t open or deform folding edge.
4. **Mechanical shock**\
   Don’t fall, hit, bend battery body.

### Others

1. **Prohibition of disassembling**
   1. **Never disassemble the cells**\
      The disassembling may generate internal short circuit in the cell, which may cause gassing, firing, or other problems.
   2. **Electrolyte is harmful**\
      LIP battery should not have liquid from electrolyte flowing, but in case the electrolyte come into contact with the skin, or eyes, seek medical assistance immediately.
2. **Prohibition of dumping of cells into fire**\
   Never incinerate nor dispose the cells in fire. These may cause firing of the cells, which is very dangerous and is prohibited.
3. The battery has no waterproof function, do not sprinkle liquid on the battery or put the battery into the liquid.
4. **Battery cells replacement**\
   The battery replacement shall be done only by either cells supplier or device supplier and never be done by the user.
5. **Prohibition of use of damaged cells**\
   The cells might be damaged during shipping by shock. If any abnormal features of the cells are found such as damages in a plastic envelop of the cell, deformation of the cell package, smelling of electrolyte, electrolyte leakage and others, the cells shall never be used any more. The cells with a smell of the electrolyte or a leakage also shall not be used.
6. **Other: Chemical Reaction**\
   Because batteries utilize a chemical reaction, battery performance will deteriorate over time even if stored for a long period of time without being used. In addition, if the various usage conditions such as charge, discharge, ambient temperature, etc. are not maintained within the specified ranges the life expectancy of the battery may be shortened or the device in which the battery is used may be damaged by electrolyte leakage. If the batteries cannot maintain a charge for long periods of time, even when they are charged correctly, this may indicate it is time to change the battery.

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