ORIGINAL: bgw45
+1 ..... I have used a couple of them for years with no issues. I am also using the Syssa IBECs in a couple of airframes and have a couple of Smart-Fly systems too. They all work.
The TECHAERO IBECs (aka Syssa IBEC) takes my vote. Once you use one of these and realize the total lack of RFI (electronic filtering), convenience and safety aspect, you will never go back. And only one battery to charge and maintain