Lithium ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of 350/ 500/ 1200/ 2000/ 2500mAh for a total of about 1.3/1.9/4.8/8/10 Wh. 

The batteries come pre-attached with a genuine 2-pin JST-PH connector as shown and include the necessary protection circuitry. Because they have a genuine JST connector, not a knock-off, the cable wont snag or get stuck in a matching JST jack, they click in and out smoothly.

The included protection circuitry keeps the battery voltage from going too high (over-charging) or low (over-use) which means that the battery will cut-out when completely dead at ~2.8V. It will also protect against output shorts. However, even with this protection it is very important that you only use a LiIon/LiPoly constant-voltage/constant-current charger to recharge them and at a rate of 600 for 1200mAh/ 1000 for 2000mAh / 1200mA for 2500mAh or less.

Like most lipos, the batteries we sell do not have thermistors built in. This is why we suggest charging at 1/2C or even less. Even 500mA is a good charge rate, which is how much you can get from a USB port.

Additional safety notes: Do not use a NiMH/NiCad/lead-acid charger! Also, do not abuse these batteries, do not short, bend, crush or puncture. Never charge or use unattended. Always inspect batteries and surrounding circuitry constantly for any damage, loose wiring, or possibility of short circuits. As with all Lithium ion polymer batteries and with any power source - they should be used by experts who are comfortable working with power supplies

Technical Details:

100mAh:

• Datasheet
• Weight: 3g
• Size: 11.5mm x 31 x 3.8mm / 0.45" x 1.2" x 0.15"
• JST-PH Connector Length: 105mm / 4.1"
• Output: 100mAh at 3.7V nominal

150mAh:

• Datasheet
• Weight: 4.65g
  
• Size: 19.75mm x 26.02mm x 3.8mm / 0.77" x 1.02" x 0.14"
• Power Lead Length: 127.5mm / 5"
• Output: 150mAh at 3.7V nominal

350mAh 

• Datasheet
• Weight: 7.9g
• Dimensions: 36mm x 20mm x 5.6mm / 1.4" x 0.8" x 0.22"
• Power Lead Length: 100mm / 3.9"
• Output: 350mAh at 3.7V nominal

500mAh

• Weight: 10.5g
• Size: 29mm x 36mm x 4.75mm / 1.15" x 1.4" x 0.19"
• Power Lead Length: 80mm / 3"
• Output: 500mAh at 3.7V nominal

1200mAh

• Weight: 23g
• Dimensions: 34mm x 62mm x 5mm / 1.3" x 2.4" x 0.2"
• Output: 1200mAh at 3.7V nominal
• Battery datasheet
• Battery test report
• MSDS Report

2000mAh

• Dimensions: 60mm x 36mm x 7mm / 2.4" x 1.4" x 0.3"
• Weight: 34g
• Nominal Capacity: 2000mAh ±2%
• Nominal Voltage: 3.7V
• Standard Charge Current: ~0.2C / 0.5A
• Charge Cut-Off Voltage: 4.2V
• Standard Discharge Current: ~0.2C / 0.5A
• Battery Datasheet
• MSDS Report

2500mAh

• Weight: 52g
• Size: 2" x 2.55" x 0.30" (51mm x 65mm x 8mm)
• Output: 2500mAh at 3.7V nominal
• Battery pack datasheet
• Battery pack test report
• MSDS Report 
• Product ID: 328