What is the nominal output current rating of the charger?
H. What type of battery is the charger designed to recharge? What this means is what type of charging algorithm is used? In other words, what voltage levels, current levels, and timing does the charger employ as it recharges the battery? This seems like an awful lot of questions to ask before we can say YES or NO to charging more than one battery with a single charger. The short answers are given first, and then a more detailed discussion follows. SERIES CONNECTIONS: If the answer to question 15.A) is that the batteries are connected in series, where the battery voltages add to make a larger voltage, then for optimum recharging, the answers to questions 15.B), C), D), and E) must be yes. The batteries must be the same type, the same size, used in the same application, and they must be discharged to the same level before they are connected to a battery charger. The answer to question 15.F) is that the nominal output voltage of the charger must equal the total nominal voltage of all of t