DNT 21700 Unprotected Flat Top Battery for ZULUS V2 & 4K & ThermNight TNC335R & TNC635R

Yes, this DNT 21700 unprotected flat top battery is specifically designed to fit and power ZULUS V2, ZULUS 4K, ThermNight TNC335R, and TNC635R night vision devices. It is the recommended replacement to ensure proper performance and fit.

'Unprotected flat top' means the battery does not have an internal protective circuit and features a flat positive terminal. This design matches the original battery type used in your ZULUS or ThermNight device, ensuring secure contact and intended charging in compatible devices. Always use it only in devices specified by the manufacturer.

This 21700 flat top battery has the same dimensions and contact design as the original cell provided with your ZULUS V2, 4K, or ThermNight device. Just make sure you insert the battery with the flat top terminal aligned as shown in your device manual for a proper fit.

Battery branding, color, or labeling may look different due to updates from the manufacturer or distributor. As long as you purchased the DNT 21700 unprotected flat top battery from Night Vision Universe for your listed device model, it is fully compatible and suitable for your equipment.

Your replacement battery will arrive ready for immediate use—just insert it as instructed in your device's manual. If you have any issues with fit, performance, or delivery, contact Night Vision Universe promptly for assistance or information on their return/exchange policy.

This battery is specifically designed for use with ZULUS V2, ZULUS 4K, ThermNight TNC335R, and TNC635R models.

Product photos are for reference only. Because supplier inventory changes, the battery brand, label design, and external appearance may vary, but any battery provided will meet the required specifications and compatibility for the listed products.

We recommend confirming fitment with your manufactured optic or your current battery before purchasing to ensure it is the correct match for your device.

Please note that these batteries cannot be returned for exchange or refund.

Yes, please review our ITAR / EAR COMPLIANCE regarding the International Traffic in Arms Regulations (ITAR) and Export Administration Regulations (EAR) for export restrictions.