PULSE 3300mAh 50C 44.4V 12S LiPo Battery - No Connector

In stock
For 550-size to 600-size helicopter with 12S config, such as T-Rex 600E DFC, Synergy E5. Not compatible with Goblin 570. Pulse Ultra Lipo Battery - Power Redefined.Pulse Ultra Batteries have redefi...

For 550-size to 600-size helicopter with 12S config, such as T-Rex 600E DFC, Synergy E5. Not compatible with Goblin 570.

Pulse Ultra Lipo Battery - Power Redefined.

Pulse Ultra Batteries have redefined the RC lipo battery industry, with a goal to provide the absolute pinnacle in lithium battery technology. After many years of outstanding success, Pulse Ultra lipo batteries have lived up to their name in the RC industry, providing massive power & performance at cost levels simply unheard of with a battery technology of this capability. 

Dedicated within the RC helicopter industry, along with a rapid advancement in the airplane & multi rotor segment, Pulse has quickly become the choice of pro level pilots and beyond, filling the flight line with pilots of all skill levels & demands. 

Outfitted to perform, Pulse Ultra is the brand pilots search for, and when compared with other battery manufactures in the marketplace, Pulse continues to provide levels of quality, performance and power that outstrip all others.

Offered in a myriad of cell counts, capacities, C ratings and size ranges, Pulse Ultra lipo battery is set apart by 5C charge rates, large selection for all manners of aircraft, high quality construction, and a reputation that is true to form. Expanding even further, Pulse Ultra provides dedicated batteries for receiver applications, transmitter applications, airplane applications, and multi rotor applications as well.

Living up to the inherent quality Pulse Ultra is known for, each Pulse Ultra lipo battery is equipped with a (90) day manufacturer warranty at the time of sale, proving how serious Pulse is committed to quality. 

For the ultimate choice in battery technology for helicopter, multi rotors, airplane applications and more, Pulse Ultra lithium polymer batteries live up to their name, seen by many within the industry as the very best in lithium polymer power.

12S 44.4V Wiring:

Use a bullet style connector (male and female) to join the two (2) yellow wires - one male, and one female. This connector should be 5mm or larger, which allows the pack to be broken into two 6S packs for charging.

For the positive / negative (red & black) wires, these will solder to a standard connector of your choice, such as an EC5 connector. Once soldering is complete, the (2) yellow wires can be joined together, which will tie both packs into (1) 12S 44.4 battery, outputting 12S 44.4V power via the connector attached to the positive / negative (red & black) wires. This setup negates the need for a series connector, simplifying the wiring setup. You will need to make a custom charge lead for each 6S pack to allow each 6S battery to be charged independently.

Be extremely careful with polarity! Polarity reversals can cause serious damage to the battery, and can inflict serious harm - any such polarity reversals are NOT covered under warranty, and all such battery setups are the sole responsibility for the end user.

Alternative Wiring - (2) 6S 22.2V Setup:

Solder connectors of your choice (such as EC5's) to (1) yellow wire, and (1) black wire, and solder another connector to the yellow & red wire. Be extremely careful with polarity! With this option, you will need to use a series connector to link both battery packs into a 12S 44.4V battery setup. However, charging is simplified, as each 6S pack is easily charged using standard charge leads and balance tabs.



  • PULSE 3300mAh 50C 44.4V 12S LiPo Battery - No Connector
  • Dedicated High Performance RC Lipo Battery
  • Large Array of Sizes & Voltages, Light Weight & Low Cost
  • 5C Charge rates for Ultra fast Charge Times & High Discharge Rates
  • Applications: RC Lipo Battery, Helicopter Battery, Airplane Battery



  • Voltage | Cell Count : 44.4V 12S Lipo Battery
  • Capacity:  3300mAh Lipo Battery
  • Discharge Rate | Max Burst : 50C | 100C
  • Dimensions: 270±2mm x 48±1mm x 45±1.5mm (LxWxH)
  • Weight:  1210g
  • Balance Tap: JST-XH Connector
  • Battery Connector: No Connector 



Pulse Ultra Complete Safety Document - Please Click Here




    Returns Policy

    You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

    You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

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    Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

    Product Spare Parts

    FPVDirect-Battery Straps

    $3.79 $0.99

    iCharger X8
    SKU: IC-X8


    FPVDirect-Battery Straps

    $3.79 $0.99

    iCharger X8
    SKU: IC-X8

    Customer Reviews

    Based on 7 reviews
    Very light!

    Battery came nicely packaged and was blanced! Well tinned and easy to solder

    Pulse 6s 3300mah

    Pulse batteries are the absolute best batteries on the market. They have never let me down. These 3300mah are perfect for my new kraken 580s!

    Great product

    Best lipo on the market with a great customer service and superb shipping speed


    What can I say? I've had Pulse batteries before and they have been excellent in the past. I would have given a 5 star rating but these days other manufacturers are putting a extension on the balancing lead making it much easier to unplug from the balancing board.
    Nothing to do with the battery itself but they come in a box with large lettering saying 5000mah with a tiny sticker on the end of the box saying 3300mah. Not wanting to open a sealed box, led me to a bit of confusion and a phone call to Pulse.


    Great pack I’m sure.. but for a 3300mah, it will not work for most applications as it is the size & weight of a 5000mah.


    Great pack I’m sure.. but for a 3300mah, it will not work for most applications as it is the size & weight of a 5000mah.


    Perfect for Harlock Viper 140 with a 12s setup. Always had the best luck with Pulse batteries, not the cheapest for sure but never puffed one and I have many, some are several years old and still working great.