Connecting two RC batteries in sequence is a typical apply to extend the voltage output. That is achieved by connecting the optimistic terminal of 1 battery to the destructive terminal of the opposite battery, after which connecting the remaining optimistic and destructive terminals to the circuit. The voltage output of the 2 batteries might be additive, which means that two 3.7v batteries linked in sequence will produce a voltage output of seven.4v.
There are a number of advantages to connecting RC batteries in sequence. First, it could improve the voltage output of the batteries, which might be needed for powering high-power gadgets. Second, it could lengthen the runtime of the batteries, as the full capability of the batteries might be elevated. Third, it could assist to steadiness the load on the batteries, as the present draw might be evenly distributed between the 2 batteries.