Why Upgrade Your Balance Connector & How We Do It

The balance port on most battery chargers is a JST B7B-XH.

The balance charging port on your charger has one more contact pin than the maximum number of cells it can charge and it’s a MALE. For example, a 6S capable charger has a 7 contact pins. It has a JST B7B-XH.

The connector that plugs into a JST B7B-XH is a JST XHP-7. It’s a FEMALE. The gender of a connector, male or female is determined by the METAL part of the connector, the contact. NOT THE PLASTIC PART. That’s called the housing.


Here’s a disassemble JST XHP-7

Here’s a JST XHP-7 at the end of a charging lead.


For the best connection and most durability, select the biggest JST balance connector that you can fit into your battery charger, regardless of the cell count (1S-10) of the battery.

A 1S LiPo battery requires a 2 pin connector. A 2S requires a 3 pin. 4S a 5 pin. Batteries always require 1 more pin than the number of cells or S. A 1S charging Lead with a 10S capable connector that has 11 pins on it will physically grab onto your charger better to keep it from getting unplugged by accident.

A better balance connector will keep you charging more consistently.

The more channels your charger has, the more of a tangled mess the balance board wires and cords can be.

MCRC Premium Charging Leads plug directly into your charger. Nice, neat, and clean. This also eliminates the need for balance board

Other companies might sell you a wider JST XHP plastic connector housing, but they don’t put all contacts it. Like a 2S Charging Lead that has a JST XHP-7 housing on it with only 3 of the 7 contacts in it.

MCRC puts all the female contacts in the housing with short wires that are dead ended in adhesive heat shrink. These extra females in the charging lead grab onto the males in the charger.

Giving you the most durable connection you can buy.

Get Yours Today!