Marsen Energy 36V 12.6Ah High Power BGT/BGTX Skateboard Battery

36V 12Ah High power BGT skateboard battery upgrade

Brand: Marsen

Model: 12.6AH-HP

Product Code: 2019

Availability: In Stock

Marsen Energy 36V 12.6Ah High Power BGT/BGTX Skateboard Battery

This is the high power version of the battery upgrade for Evolve Bamboo One, Gen 2, GT and GTX. It uses Molicel INR21700 P42A 4.2Ah cells and can output over 100% more power than the standard 12Ah with 135A continuous capability. The nominal voltage is 36V with a charge voltage of 42 volts so it can be charged using our standard 2A charger or the fast 4A charger. The cells are spot welded together with 99.99% pure Nickel strips using a commercial grade 15KVA inverter battery welder for strong quality welds. It has an 11 wire JST connector for BMS balancing (compatible with Evolve BMS) BMS not supplied, BMS from existing Evolve battery required. It has upgraded 12AWG silicone power leads (compared to the standard 14AWG) and fitted with T-style Deans connector and a high current clamp connector for a solder free connection.

Watch the installation guide to see how to upgrade.

Special requests for different configurations or plug types can easily be arranged.

The shipping price on these batteries includes insurance. 

All Evolve Bamboo boards require modifications to fit these larger upgrade batteries. Marsen Energy offer a riser plate designed to make installing the battery easier providing the required extra space to house the larger battery. These are available for $55, they are CNC machined from ABS plastic and come with longer screws. Spacer


Voltage Sag

One of the main issues with the some electric skateboard batteries is voltage sag when under high load such as going up hills. By using a higher rated cell the voltage sag can be reduced. The Molicel INR21700P42A cell is rated to 45 Amps so voltage sag is reduced to a minimum when a 10S3P battery pack is used. This will provide 135 Amps continuously. For a more detailed explanation of voltage sag see Jay Boston's youtube clip. Voltage Sag


There is currently a 4 week lead time from ordering.

# Power capacity according to the specifications of the cell manufacturer. The power capacity available during operation is lower to increase service life.

Marsen 12Ah Electric skateboard pack.


Capacity:                 12.6Ah/12600mAh

Nominal Voltage:      36V

Discharge current:    135 Amps

Standard Charge:     2 Amps

Fast Charge:            4 Amps

Charge Voltage:       42V

Weight:                  2150g

Dimensions:            365mm x 130mm x 22mm


# Power capacity according to the specifications of the cell manufacturer. The power capacity available during operation is lower to increase service life.

Marsen Energy Lithium-ion Battery Limited Warranty 



This limited warranty (hereinafter “Warranty”) specified below applies to Marsen Energy Lithium-ion batteries.

1. Purpose 

The primary purpose of this Warranty is to clearly define the matters related to warranty policy of Products. 

2. Warranty Condition 

2-1. Warranty Period 

The Warranty for the Products is valid for 6 months from the purchase date (the “Term of Warranty”). 

2-2. Limitation of Warranty scope 

Marsen Energy’s liability under this Warranty shall be limited to replacement, repair and refund. Replaced or repaired Products shall be warranted for the remainder of the original Term of Performance Warranty. In any event, the replacement shall not justify the renewal of the Term of Performance Warranty. 

2-3. Exclusion of Warranty 

Damage to the Products resulting from any of following is NOT covered by this Limited Warranty: 

  • Improper transportation, storage, installation or wiring by Buyer 

  • Modification, alteration, disassembly, repair or replace by someone other than personnel certified by Marsen Energy 

  • External influences including unusual physical or electrical stress (Lightning, flood, fire, accidental breakage, etc.) 

  • Use of an incompatible BMS, PCM, or ESC. 

  • Use without a compatible BMS or PCM.
  • Defective BMS, PCM or associated components.

3. Out of Warranty Policy 

Products damage which is not caused by seller, Marsen Energy shall provide charged service, including all the expenses of such as material cost, labor cost, warehouse cost, transportation cost, analysis cost, management cost, corporate profits, disposal expense(If necessary) and so on. 

4. Claim Payment Policy 

Claims under this Warranty must be made by notifying Marsen Energy directly. 

For a Warranty Claim to be processed, it must include following items; 

(1) Proof of the original purchase 

(2) Description of the alleged defect(s)  

(3) The relevant Product’s serial number and the initial installation date 

5. Applicable Law 

The Warranty is subject to the law of Australian State. Products come with guarantees that cannot be excluded under the Australian Consumer Law. The Buyer is entitled to a replacement or refund for a major failure. The Buyer is also entitled to have the goods repaired or replaced if the Products fail to be of acceptable quality and the failure does not amount to a major failure. The benefits to the consumer given by the warranty are in addition to any other rights and remedies of the consumer under a law in relation to the goods or services to which the warranty relates. This warranty only applies to the Buyer who have purchased the Products for their own use.