We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular Li-ion battery pack 15.4V 3850mAh

KingSener

KingSener BT-YU02 15.4V 3850mAh laptop battery

SKU CH-2TRX-N0Q6E MPN BT-YU02

Replacement Li-ion drone battery delivering 15.4V and 3850mAh capacity for extended flight time

  • Battery Voltage15.4V
  • Battery Capacity3850mAh
  • Extended flight time with 3850mAh capacity
  • Reliable 15.4V output for stable drone performance
  • High-quality Li-ion cells deliver consistent power
  • 100% compatible with DJI Mavic 2 series drones
  • Brand new replacement battery with one-year coverage

Drone Battery Replacement

The KingSener BT-YU02 is a 15.4V 3850mAh Li-ion replacement battery designed for DJI Mavic 2 series drones. It supplies reliable power for extended flight sessions and aerial photography work. The pack uses high-quality cells with a PCB that delivers the full rated capacity without inflation. Pilots seeking longer air time per charge will find it a direct fit.

Thermals Noise and Power Draw

Li-ion chemistry runs cool during normal discharge and produces no audible noise in flight. The battery maintains stable voltage output throughout its cycle and accepts a standard charge current. Users should avoid leaving the pack connected to the charger indefinitely and store it above 80% if unused for more than a month. Heat and humidity exposure will degrade performance and safety.

Upgrade Path and Value

This unit replaces the original DJI intelligent flight battery when capacity has faded or a spare is required for back-to-back missions. The jump is worth it when the stock pack no longer holds a useful charge or when a second battery doubles operational uptime. It is not suited for other DJI series or non-DJI airframes that demand a different voltage or connector.

Highlights

  • Extended flight time with 3850mAh capacity
  • Reliable 15.4V output for stable drone performance
  • High-quality Li-ion cells deliver consistent power
  • 100% compatible with DJI Mavic 2 series drones
  • Brand new replacement battery with one-year coverage

Specifications

BrandKingSener
ModelBT-YU02
Part NumberFB2
BT-YU02
Battery Voltage15.4V
Battery Capacity3850mAh

Questions about this item

How do I install the BT-YU02 battery in my DJI Mavic 2 drone, and what step do people often get wrong?

Slide the battery into the compartment until the latch clicks securely; the step users miss is fully charging and discharging it from low current two or three times before regular use.

What maintenance will this 3850mAh Li-ion battery need later?

If stored long-term, charge it above 80% at least once a month; avoid leaving the adapter connected during use and keep it away from hot or humid conditions.

What limit appears first during sustained flights with this 15.4V pack?

The 3850mAh capacity sets the flight-time ceiling; continuous high-drain operation will deplete the charge before thermal limits are reached.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.