We delivered 25 pcs of 4S Active Equalizer battery balancers to a client from Spain. We packed them into a carton, and the total gross weight is 5 kg. We shipped them to Spain by air via UPS, and it took 7 days to arrive.
The individual cells in a battery pack are rarely identical to all the other cells in the pack. In actual practice, when a pack of batteries reaches a specified charge cutoff voltage, the charger will shut off. If one cell in a pack reaches that voltage before other cells reach a full charge, it will cause the charger to shut off — prematurely denying the rest of the pack a full charge.
Conversely, when the weakest cell in a pack reaches its discharge cutoff voltage, it will trigger the discharge point and shut down the pack prematurely — thereby denying the user the remaining energy the other cells have stored. These battery equalizers prevent this from happening, thereby yielding up to 30% more usable power and extending the life of the battery pack.
If you have any requirements, please feel free to contact us.

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