The capacity of the batteries will not increase when connected in series. Here are some tips for connecting batteries in series and parallel:
1. Connecting batteries in series increases the voltage.
2. Parallel connection to increase capacity.
Series voltage: Individual cells of 3.7V can be assembled into a battery with a voltage of 3.7*(N)V as required (N: number of individual cells)
Such as 7.4V, 12V, 24V, 36V, 48V, 60V, 72V, etc.
Parallel capacity: A single 2000 mAh battery can be assembled into a 2*(N) Ah capacity battery as required (N: number of individual cells)
p>For example 4000 mAh, 6000mAh, 8000mAh, 5Ah, 10Ah, 20Ah, 30Ah, 50Ah, 100Ah, etc.