more than 2000 times  lifecycle  20Ah 12V lithium battery for segway with abs case
 
 
Specifications

• Operation Conditions

• Charge Method	Constant Current/Constant Voltage (CC-CV)
  Max. Charge Voltage	14.6V
  Charge Current	5A
  Charge Temperature	045
  Continuous Discharge Current	10A
  Peak Instant               Discharge Current	20A,
  Peak Instant               Discharge Time	10 seconds
  Discharge Cut-off Voltage	10.0V
  Discharge Temperature	-2065
  Storage Temperature	-2040

   

• Mechanical Characteristics

• Electrical Charateristics

Application of lithium battery:

• Vehicles: electric bicycle, golf car, electric wheelchair, electric scooter  
• Illuminate devices: solar battery, miner lamp, solar street lamp, emergency light, electric torch, wind and solar system
• Communication: back-up electric supply, interphone
• Power tools: electric cropper, electric drill, electric saw, electric hammer,pump
• Others: RC toy, small home appliance.

 
Advantages of 12v 20ah lithium battery:
      1) Long cycle life: more than 2000 times (charge and discharge at 1C, 80% DOD).
      2) High safety: no fire and explosion in overcharge test . The highest temperature <150°C.
      3) Good charging and discharging performance.
           (A)0.2C5A ≥100%     (B)1C5A ≥99%     ( C)2.5C5A ≥97%
      4) High discharge rate up to 10C.
      5) Environmental-friendly: all raw material of the batteries are environmental-friendly.
      6) Wide working temperature range: from -4F to 150F(-25°C to 70°C).
 
Company Information
 
OPTIMUMNANO has more than 4000 employees, including of 600 R & D persons, covering a production area of 80.000 m2 and has brought in over 1000 sets of advanced production equipments. Now we can produce 500,000 pcs of 32650-5.5Ah cells per day
 
We are one of the largest LiFePO4 battery manufacturer in China, and we have strictly performed ISO9001:2008 quality management system and attained TS16949 certificates since 2009 as well as other products certificates of CE,UL,UN38.3,ROHS,SGS-IEC62133 etc. 
 
Safety of optimumnano battery
 
1. for cells:
 

•  Break Protection: When the internal pressure in the single cell reaches its limits, the Gas Release Vent will turn around, the positive and negative welded plate shall break apart, the circuit inside shut down
•  Anti-explosion Protection: If the air inside the cell or liquid injection is too much, or over charge, over discharge, then the pressure could reaches its limits, the Gas Release Vent shall be cracked, through which the air can be quickly exhausted, and then the explosion can be avoided.
•  PTC Protection: PTC is the heat sensitive device, which can be used to protect the battery pack against over current or high temperature, when it’s over current or overheat, the resistance of the PTC shall be raised, until it becomes the insulator, the current can’t pass through, the whole circuit ought to be shut down.

the point 3 only for the high rate cells for electric vehicle, we do not produce such cells now, our 32650 cells without this protection
 
2. for battery pack
 
We have the PCM(with MOS) and PCB for safety protection

•   the PCM is built to detect the battery voltage and current. 

When the battery is over voltage, low voltage or over current, it will cut off to protect the battery from over charge and over discharge.

• the PCB board is build to short circuit protection, it is the secondary protecion

When the current is too large than the limited current, the battery will be protected from short circuit.
We have the fuse on the PCB. if one cell is broken, the fuse will be used to separate the cell from others.