The Big Foot Heat 1300 mAh 11.1 V 20C LiPo Battery is a 3-cell Lithium Polymer (LiPo) energy source made for airsoft AEGs, RC models, and other hobby electronics that require a compact yet powerful battery. Its stick-style form factor (approx 120 mm long) and Mini Tamiya connector mean it fits easily into tight battery compartments such as buffer tubes or under stocks.
This battery balances usable capacity, steady power output, and space-saving design — perfect if you want improved trigger response and longer play times over lower-voltage packs. 
 
Key Specifications
Battery Type: Lithium Polymer (LiPo)
Voltage: 11.1 V (3S) — three cells in series for increased power output.
Capacity: 1300 mAh — provides decent runtime for most airsoft skirmishes and RC sessions. 
Discharge Rating: 20C continuous — supports consistent power delivery, with typical burst rates up to around 40C in similar batteries. 
Connector: Mini Tamiya — widely compatible with many Airsoft AEG platforms.
Configuration: Stick style (~120 mm length) — ideal for narrow compartments. 
Balance Lead: Includes JST-XH balance plug for safe balancing during charging.
 Features & Benefits
More Power & Speed: Higher voltage (11.1 V) often gives faster trigger response and increased rate of fire compared with lower-voltage packs.
Good Capacity: 1300 mAh strikes a balance of playtime vs size, so you get substantial running time without a bulky battery. 
Standard Connector: Mini Tamiya makes it compatible with many AEGs straight out of the box. 
Compact Fit: Stick configuration fits most common airsoft battery spaces like crane stocks and rear-wired buffer tubes.
 
Usage & Safety Tips
Always charge with a LiPo-specific balance charger and use the balance lead during charging.
Do not leave charging unattended and consider using a LiPo charging bag for safety.
Avoid discharging the battery fully — stopping use when performance drops helps preserve lifespan.