This just may be, the best battery warmer on the market today! The GunSpec lipo warmer is made using an industrial grade heating pad that retains a stable temperature even when its cold outside. The steel internal structure helps maintain a stable temp setting which is vital for battery charging. 

Tests by SuperStock have indicated that a battery warmer is the best bang for buck charging add on you can buy today. Voltage hold above 7.9v increases significantly and IR drops drastically, here is what we have seen across all packs:

1. IR drops of at least 50%
2. voltage hold above 7.9V of 10 seconds or more across the following voltage points; 8.4, 8.2, 7.9V. testing was conducted using a Donathen RC discharger at 45amps and 345 seconds discharge time.
3. longevity of lipo extended. some of our most used lipos that have been warmed since purchase are still our best packs

Instructions:

Some batteries do not like to be warmed above a certain temperature. This is NOT because they are inferior, but simply their design. follow the below recommendations for temp settings:

• Team EAM: 40 to 45Celcius. these packs will puff if you go above 50C
• Zombie 6300 and 6900: 45 to 52C. do not go higher as zombie states that you should not go above 60C
• ez power: 40 to 45C
• R1 7000's: 40 to 45c
• Cayote 7000: minimal testing has been done with this pack, stick to 40 to 45C