Li-ion 6S 4000mah 40A battery pack

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A buck of Li-Ion Power in a delicious compact package, 
so fat for a lot of juice just for your long range drone!


6S1P 21700 li-ion battery pack.

High quality Samsung 4000mah 40A cells







  • This battery pack is meant for cruising and long range flight with 5", 6" and 7" inches drones. Keep in mind that it performs better with low RPM and good torque motors equipped with the right propeller. 
    For more information, check your motor's performance chart and find out which prop gives the best efficiency value referred to a 6S battery: that's the right propeller for this battery.

  • Plan your flight in order to still have 3.6 V/cell when landed: this will keep your Li-Ion battery pack healthy for a long long time.

  • Select specific Li-Ion program on your balancing charger and charge at no more than 2.0 A.

  • With multi-rotors, stay at 50/55% of your throttle and be smooth when open up and maneuver. You could consider to set your throttle curve and roll/pitch rates in order to have smoother accelerations. This way you will enjoy this battery pack almost a life-time.



Standard connector: XT60 (write us if you want any other connector -

Nominal voltage/cell: 3.6v

Nominal 6S voltage: 21.6v

Nominal capacity: 4000mah

Weight: 439.6g

Dimensions mm (W x L x H): 65 x 80 x 43

5 Reviews

  • 5

    Posted by Luca Pelizzaro on 25th Aug 2020

    Devo ancora testarle approfonditamente, ma già dai primi voli si stanno comportando egregiamente!! Le sto utilizzando su un drone fpv 7" da long range (non leggerissimo) e per ora 16 minuti li faccio tranquillamente

  • 5
    Review 6s 4000 Li-ion battery

    Posted by Antonio on 11th Aug 2020

    Amazing battery and honest seller.
    Not more to tell.......very good

  • 5
    6S LiIon 21700 4000mah

    Posted by Mark Pallaschke a.k.a. RDoc_FPV on 1st Aug 2020

    Great power source for my 7“ long range quad. Very good build quality and almost 20min flight time: highly recommended!

  • 3

    Posted by GABRIELE GRECO on 14th Jun 2020

    Un po lenta la spedizione, per il resto la batteria è conforme alla descrizione! Buona qualità

  • 5
    Review 6s 4000 Li-ion battery

    Posted by Antonio on 11th Dec 2019

    Amazing product.
    I will buy again from farinsframes.