Multipack Charging with Bantam e-Station Chargers

Recharging LiPo batteries between flights can be extremely time-consuming and keep an RC pilot grounded for hours. With a little know-how and the right parts, your Bantam BC5, BC6, or BC6-10 e-Station charger can greatly reduce that delay by charging two or even three packs at the same time.

In this tutorial, we'll use the Bantam BC6 e-Station Charger to charge two LiPo packs with a Multi-Pack Charging Harness for 2 Batteries and a Bantam E-Station Multi-Pack Balancing Board. We'll be charging two CSRC 7.4 volt 6000mAH 8C Li-Poly Packs.

It is EXTREMELY IMPORTANT to use batteries with matching voltage, mAh, and C-ratings when multi-pack charging. Failure to do so can result in over-charging one or more packs, creating a serious fire hazard.

Please follow all precautions as outlined in your charger's and balancing board's Operations Manuals.

Step 1: Charger Setup

First, your charger is going to need power. The Bantam BC6 is AC/DC compatible right out of the box, so we'll be plugging it directly into the wall socket. If you're using a BC5 or BC6-10 you'll need to connect your charger to a power supply.

Once you have power, connect your multi-pack balancing board to the charger's individual cell connector port, as pictured below.

Here, we're using a Bantam EAC144 multi-pack balancing board because its ports are compatible with our CSRC lipo packs. If you're using another brand, you'll need to choose a balancing board that is compatible with your packs.

With the balancing board connected, next connect your charging harness to the charger's positive (+) and negative (-) output ports. Remember red is positive and black is negative, and be sure you're using the right harness for the number of packs you're charging (two or three packs)

 

Step 2: Connecting Your Batteries

Next, plug your batteries into the connectors on your charging harness.

Here, we will consider the battery connected to the black/negative wire to be in position one, and the battery connected to the red/ positive wire to be in position two (If you are charging three packs, the middle port is position two and the port connected to the red/positive wire is position three).

To complete the circuit, connect your batteries to the multi-pack balancing board.

It is very important to make sure your batteries are connected to the board properly. The EAC 144 shown here has one row of ports for three cell packs and one for two cell packs, and each port is numbered. The port number corresponds to the battery's position on the harness. So, the battery in position 1 plugs into port B1, and the battery in position 2 plugs into port B2. THE BATTERY CONNECTED CLOSEST TO THE BLACK NEGATIVE WIRE ON THE HARNESS MUST ALWAYS BE CONNECTED TO PORT B1. Connecting batteries to the board any other way will reverse the polarity and damage your packs, your board, and/or your charger.

Step 3: Programming the Charger

Review your battery connections one more time to make sure everything is correct before proceeding.

The connectors on the charging harness should be firmly connected to the matching connectors on both batteries. On the balancing board, make sure you are using the row that matches the number of cells in your packs. The battery connected to position one on the harness should be connected to port one on the balancing board, position two to port two, and position three to port three (if you are charging three packs).

Once your batteries are properly connected, programming the charger is a breeze.

Carefully follow the programming instructions included with your charger, as setup on each model will be slightly different.

On each, make sure you are programming the charger according to total voltage of all packs being charged. In these images, we have used two CSRC 7.4 volt 6000mAH 8C Li-Poly Packs and will program our charger for 14.8 volts.

Once you have programmed your charger and carefully followed all precautions in the operations manual, your packs are ready to charge!


As always, the LiPo experts at CSRC are ready to help you with any questions you may have about your CSRC battery packs or chargers. Follow the link at the top right corner of your screen to contact us now, or call us toll-free at 866-405-8811.