8500mAh 25.9V 7S 20C Supersport XL LiPo Battery

The 8500mAh 25.9V 7S 20C LiPo battery is part of Overlander's advanced Supersport XL range. This is our highest-capacity range, specially designed for use within large-scale UAVs. The exceptional capacities create crazy running times and huge amp draw. These battery packs are also extremely customisable; we are able to produce and manufacture lithium batteries in our UK warehouse, making it easier than ever to create your own ideal LiPo pack. Supersport XL cells are always carried in stock, making it really easy to get your perfect lithium pack fully manufactured to your specification and design here in the UK. These light-weight and conveniently sized battery packs cater for high-end users who are sure to be impressed with the power and capacity availability of this range!

Ultra-High Capacity Extended Flying Times High Voltage Range UAV/Drone Application

All of Overlander's LiPo batteries are designed with optimal performance in mind. We always work to maintain the longevity and reliability of our products. Our LiPo batteries are manufactured using the superior stacking method; this provides dependable capacity and consistent power. Every cell is fully matched in Internal Resistance, Voltage and Weight before they are put together to create your battery packs. This stringent matching process makes for exceptional results both competitively and professionally.

Matched CellsVoltageVoltageWeight


Overlander is proud to work in conjunction with the renowned Fullymax to produce high-quality LiPo packs. The production process for LiPo battery cells is fully automatic and completed in a dust free atmosphere using uniformity and conformity. Fullymax cells are renown for their:

High Energy Density Light Weight Low Impedance Low Heat Generation Longer Cycles Long Calendar Life High Energy Efficiency No Memory Effect Low Self-Discharge

Our LiPo packs come fully equipped with high quality silicone leads and a choice of connector. It is safe to say with Overlander you are guaranteed to receive the highest-quality, top-performing batteries that you’ve grown to expect. Lithium Polymer batteries provide superior voltage, capacity and discharge/power. These combined into a lighter, more compact size, make lithium battery packs the favourable choice over alternative chemistries.

Lowest Voltage: 3VNominal Voltage: 3.7VStorage Voltage: 3.85VFull Voltage: 4.2V

SKU 3313<br />Chemistry Lithium Polymer (LiPo)<br />Capacity (mAh) 8500<br />Voltage 25.9V<br />Cell Count 7S<br />Constant Discharge 20C<br />Burst Discharge 35C<br />Maximum Constant Current 170A<br />Maximum Burst Current 297.5A<br />Watt Hours 220.15Wh<br />Wire Gauge 10AWG<br />Balance Connector Type JST-XH<br />Brand Overlander Batteries<br />Range Supersport XL<br />Length (mm) 198<br />Width (mm) 67<br />Depth (mm) 46<br />Weight (g) 1216