Celectra 4-port, 1-cell, 3.7V, 0.3A DC LiPo Charger current adjustment

This charger (which came with my mSR) is an excellent upgrade to the single cell charger that was supplied with my mCX.  As the name implies, it is a 4-port charger which means that you can charge 4 single-cell LiPo batteries at once. Unlike the single-port charger, this one can be used with an AC adapter, or 4 D-cell batteries which gives it versatility.

​This charger, like it's predecessor, charges at a rate that, in my opinion is too high for the LiPo batteries (0.3A stated, 0.25A measured).  The nice thing about the Celectra is that the charge rates can be adjusted between 0.1A and 0.3A for each port by adjusting the pot switches inside the unit (see photo).  The inside of the unit can be accessed by removing the 8 small screws from the bottom of the unit (6 inside the battery compartment, and 2 under the rubber feet on the bottom like it's predecessor).

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To measure the current, a 'Y' harness must be made. I have made mine quite long with Dean's Ultra connectors so it can be used with any of my models; some of which draw currents over 20 Amps (see photo below).  I have made some adapters to go from the Dean's Ultra connectors to the E-Flite connectors.  

The connectors can be purchased separately, or you can salvage them from other places (i.e. the female end can be salvaged from an old single port charger and the male end can be salvaged from a dead battery).  Once the adapters have been made, plug the male end into one of the charger ports, plug the battery into the female adapter, choose the current setting on your meter and adjust the pot to the desired current.​​​