Our Design Partner, FMA Direct

Our in-house staff of engineers is constantly at work developing new products, and improving existing designs for the R/C industry.



GT500DUO Charger


GT500DUO 1000W Multi-Chemistry Charger

Click on the link below to download or view items:

GT500/GT500DUO User Guide
Full version PDF - note: the GT500DUO houses 2 x GT500 units in one case. The user guide is the same for GT500 and GT500 DUO.

For older versions of the GT500/GT500DUO User Guide, click here
Full version PDF

Free GT500/GT500DUO "Firmware Update Utility" PC Software
The free Microsoft Windows application (not required for operation) is compatible with Win7 and above. The Utility enables fast and reliable upgrading of the GT500 or GT500DUO firmware when the PC is connected to the charger via its embedded USB interface (no dongles required). With embedded USB support, connecting to a PC for this purpose has never been easier!

Compatible Parallel Adapters
GT Series Supports the Revolectrix SPA and MPA Safe Parallel Adapters. Look for the MPA Combo in the online stores! For more information about these unique Safe Parallel Adapters, see "Native XH Adapters" at the above link (bottom of the page).