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KNS KNS-25C-4AH6S

The KNS KNS-25C-4AH6S is a 4000mAh 6S rechargeable LiPo battery for FPV drones, RC vehicles and robotics. Built with A-grade cells, the 620g pack provides 91.2Wh of energy and comes with an XT60S plug. It supports 1-4C charging, with optional connector customization and BMS communication interfaces.

KNSDrone battery
Capacity
4000 mAh
Continuous discharge rate
15C
Weight
620 g

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Product overview

The KNS KNS-25C-4AH6S is a rechargeable 6S high-discharge LiPo battery for FPV drones, RC vehicles, boats, helicopters and robotics. Its 4000mAh capacity provides 91.2Wh of energy, with an energy density of 147Wh/kg and a pack weight of 620g. The battery comes with an XT60S plug and supports charging at 1-4C. Charging operates within 0°C–45°C, while discharge operation covers -20°C–55°C. Energy storage supports 5–15 minute flight sessions depending on the application, and the battery has a cycle life of 500 cycles.

Built with A-grade cells in an ISO-certified factory, the pack uses automated production equipment for precision coating, stacking and packaging. Every cell undergoes capacity, internal resistance and voltage matching tests, followed by aging and screening before pack assembly. Safety testing covers overcharge, short circuit, crush, nail penetration and thermal stability. Each pack carries a unique serial number for traceability. Connector customization includes XT90, AS150U and QS8 options, while optional BMS interfaces include CAN, RS485 and UART for applications requiring battery communication.

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Specifications

KNS KNS-25C-4AH6S specifications
SpecificationValue & conditions
ModelKNS-25C-4AH6S
Battery type and configuration6S high-discharge LiPo battery
ApplicationsFPV drones, RC cars, boats, helicopters, robotics and other high-discharge hobbyist or industrial applications
Cell constructionA-grade cells; built in an ISO-certified factory
Capacity4000mAh
Continuous discharge rate15CFor extended operation.
Maximum discharge rate25CFor short bursts, such as sudden acceleration or maneuvers.
Charge rate1-4C
Energy91.2Wh
Energy density147Wh/kg
Weight620g
Operating temperature-20°C to 55°CDuring discharge.
Cycle life potentialUp to 500 cyclesAvoid discharge below 3.2V per cell, store at approximately 3.8V and charge at 1-4C.
Flight windowIdeal 5–15 minute flight window
Additional applicationsRC cars, boats, helicopters and industrial robotics requiring high-discharge LiPo power
TraceabilityUnique serial number for each battery pack
Assembly processPrecision coating, stacking and packaging on fully automated production lines
Cell screening100% cell testing for capacity, internal resistance and voltage matching; aging and screeningBefore pack assembly.
Safety validationOvercharge, short circuit, crush and thermal stability tests
CertificationISO 9001:2015, UN38.3 and MSDS
ConnectorsXT60, XT90, AS150U and QS8Available as customization options.
BMS communicationCAN, RS485 and UARTAvailable as customization options.
Manufacturing regulationsIEC 62133 and UN3480
Battery type6S rechargeable high-discharge LiPo battery
PlugXT60S
Charging temperature0°C–45°CDuring charging.
Discharging temperature-20°C–55°CDuring discharge.
Cycle life500 cycles
Flight session duration5–15 minutesDepending on application.
Production equipmentFully automated assembly lines with precision coating, stacking and packaging equipment
Safety testsOvercharge, short circuit, crush, nail penetration and thermal stability
Quality management systemISO 9001:2015
Product certificationsUN38.3 and MSDS
Custom connectorsXT90, AS150U and QS8Available as customization options.
BMS interfacesCAN, RS485 and UARTAvailable as options.

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