GRP v400

13.5mm battery

GRP v400

Designed to perfectly fit with the 13.5 mm Ducore® X Cartridge, this 400 mAh In-Palm battery is a compact, ergonomically designed battery to fit comfortably in your hand—a great combo kit.

Model No 8408
Body Material: Aluminium Alloy
Battery Capacity: 400 mAh
Activation Mode: Button Activated - VV
Voltage: 2.8V/3.3V/3.6V
Charging Port: Micro USB
Compatible Tank: Ducore X
Colors: White, Black, Grey, Red, Blue, Champagne, Moss Green, Turquoise Gradient, Purple Gradient

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Ultimate OEM/ODM Freedom

Why not customize our Ducore®Palm for your brand?
Ispire provide various OEM and ODM solutions for your Cannabis business.
Want to try our products? Contact us today for a FREE sample.

Aluminium Alloy Material

Built for durability
The main body of the GRP v400 uses 6000 series aluminum alloy material, which makes the battery more durable to use with a long-lasting finish.

Adjustable Constant Output

3 Output Modes
This In-Palm battery can be adjusted to 3 different constant voltage settings: 2.9V, 3.3V, 3.6V,just click the voltage button to adjust, this gives you more heat options to tailor to your vaping experience.

1A Fast Charging

USB Charging
The battery uses micro USB charging, the charge current up to 1A, which gives quick charge

Powerful Battery Built-in

Rechargeable Built-in Battery
The built-in 13300 high drain battery that comes with the In-Palm 400 mAh ensures robust battery performance and constant output.

Preheat function

Pre-heat Activation
Hold and press the button for 3 seconds to enter into preheat function. It will take 10 seconds for the device to automatically heats the coil to give you the best pure flavor instantly.

Magnetic Connector

Built for convenience
The Convenience of a 510 Magnetic Connector

With the 510 Magnetic connector you can easily connect any 13.5 mm tank to the 400 mAh Ducore® palm battery.


55.9 x 35.4 x 20.4 mm

Activation Mode

VV (Button Activated)

Connector Thread

510 Thread (M7)

Voltage Output

2.8V, 3.2V, 3.6V

Body Material

Aluminium Alloy

Micro USB Charging


Battery Capacity

Built-in 13300 high drain battery (400 mAh)

Charging Current


Cartridge Size

13.5 mm


GRP v400

Why not customize our Ducore® Palm for your brand? Ispire provide various OEM and ODM solutions for your Cannabis business.

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