Battery Tube Adapters


In the past we have recommended Trust Fire Li-Ion 26650 batteries, which were slightly longer and had protection circuits built in. These adapters are designed for our current 26650 Li-FePO4 batteries or 26650 High Capacity Li-NiMnCo batteries to work in older (v2.7 and earlier) battery tubes, as the dimensions of the batteries the tubes are designed for has changed. 

All OpenROVs purchased through this website should have contained these parts.  You only need to buy this IF you are planning to use the Li-FePO4 batteries AND you have a version v2.5, v2.6, or v2.7 with a serial number below 1200. All v2.7 kits came with these adapters. 


Dozuki: Assembly Instructions for Battery Tube Adapters

Have questions for us? Please reach out to our support team.


Once an order is placed on our webstore, it will ship within 1-3 business days. 

Taxes: For international orders, please note that it is the responsibility of the customer to cover any import any duties and taxes. You can use this third party online duty calculator to determine what the cost of this fee will be prior to ordering. The harmonization code we apply to commercial invoices is as follows:

ROV's, parts and accessories: 9503000000

Batteries: 8507600000

Apparel (Shirts and Hats): 6109100004

Once an order has been shipped, please allow up to: 

1 Week for Domestic (US) orders to arrive. 

2 Weeks for International orders to arrive. Please note that every countries' customs offices process orders at a different pace. 

Once your shipping label has been printed in our warehouse, you will then receive an automatic email containing a tracking number, and an invoice that you can use for accounting purposes. For international orders a commercial invoice is affixed either physically, or electronically to the package for the customs agents to access.