Arken/DNT 2×21700 Battery and Charger

A ready-to-go power kit for your Arken/DNT night vision or thermal optic: two flat-top 21700 rechargeable batteries plus a compact USB dual-bay charger that tops up both cells at once. Keep a charged spare in your kit bag and swap batteries in seconds in the field, instead of waiting on a single charger or hunting for a power outlet mid-hunt.

Key features

• 2x flat-top 21700 rechargeable Li-ion batteries included
• Dual-bay smart charger — charges both batteries simultaneously
• USB-C input for charging from a power bank, wall adapter, or vehicle USB port
• 3 selectable charging currents (0.5A / 1.0A / 2.0A) for fast or gentle charging
• Charger also compatible with 18650 flat-top batteries (non-protected cells only)
• Built-in reverse polarity and short-circuit protection
• Charge status display with error/fault alerts
• Compact, lightweight charger suited to field use

Compatible with

• DNT Optics Zulus HD V2 5-20X (ZHD520R-V2)
• DNT Optics Zulus HD V2 3-12X (ZHD312R-V2)
• DNT Optics TNC335R
• DNT Optics TNC635R

Always confirm battery type and charger compatibility against your specific optic’s manual before use.

Specifications

Batteries
Type	21700 flat-top, rechargeable Li-ion
Quantity Included	2
Charger
Charging Bays	2 (simultaneous charging)
Input	USB-C
Charging Current Options	0.5A / 1.0A / 2.0A (selectable)
Compatible Battery Types	21700 and 18650 flat-top (non-protected cells), plus 1.2V Ni-MH/Ni-Cd
Protection	Reverse polarity & short-circuit protection, fault status alerts

What’s in the box

• 21700 Flat-Top Rechargeable Battery x2
• USB Dual-Bay Smart Charger x1
• USB Charging Cable x1

Who it’s for

Ideal for anyone running a DNT/Arken night vision or thermal optic that takes a 21700 cell who wants a charged spare battery on hand and a way to top up both cells at once between sessions — no more juggling a single-slot charger or being caught out with a flat battery mid-hunt.