5V 10 watt output DC-DC converter, for 24V, 36V, and 48V battery packs. Operation above 60V input not recommended. Made in Vancouver by GrinTech / ebikes.ca
Additional details from the manufacturer:
The DC-DC converter is the best way to tap into your large ebike battery pack in order to power auxiliary devices, from bike lights to cell phones to GPS units. The converters below are all fully molded in an epoxy casing and are designed to operate with 24 to 48V battery packs. We do not currently have a model that is suitable for 72V batteries, but are working on it.
All of the converters are supplied with their output lead terminated with an inline 5.5 x 2.1mm DC power plug, and we supply the mating jack for this as well. There are two choices for the input leads. These can be supplied as bare unterminated wires for custom connecting to your system. Alternately, we can supply them with an anderson power-tap that can either go inline between your battery and motor controller like the Stand Alone Cycle Analyst Shunt.
Note two things. First is that these DC-DC converter modules are not isolated, they share the same ground as your battery pack, so you cannot for instance series connect two 5V converters to generate a 10V output. Secondly, the converter can get fairly hot in use, especially when used at the full output power. This is normal but it is advisable that the converter be mounted outside on the bike frame for good air ciculation. When we were designing the converters, we had a choice between the device being highly efficient or highly robust, and we chose the latter. There are diodes inside the circuit to protect against reverse voltage polarity and these protection diodes are responsible for much of this heat generation.
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