Parallel charger board for hobby RC drones and models, balance charging expansion adapter supports simultaneous charging of 4 sets of 2S to 8S lithium batteries, uses 35A rated PCB and 40A fuses for safety, with included silicone T-plug caps.
Parallel Charging Board for RC Models: Charge 4 Battery Packs Simultaneously with 35A Capacity

For enthusiasts of radio-controlled cars, drones, and aerial photography models, managing multiple lithium polymer (LiPo) batteries can be a time-consuming chore. This parallel charge expansion adapter board is designed to streamline your workshop or field charging setup. It allows you to connect and balance charge up to four separate battery packs at the same time, provided they share the same cell count (from 2S to 8S). By consolidating the charging process, it eliminates the need to constantly swap batteries on your charger, turning a sequential task into a parallel one. This is particularly valuable during intensive flying or driving sessions or when preparing multiple models for an event. The board incorporates specific safety features, such as integrated fuses and protective caps, to support this more efficient charging method.
Features and Construction

This adapter board is built to handle the demands of parallel charging, which combines the capacity of multiple batteries while maintaining their original cell count (S-number). Its construction focuses on delivering reliable current and incorporating safeguards.
Material and Build
The core of the board is a printed circuit board (PCB) that uses a thicker copper foil layer. This design choice is directly related to its ability to support a higher charging current, rated for up to 35 Amps. Electrical connections are made via high-quality gold-plated connectors, which provide a stable, low-resistance contact point for the main power leads. The output line for the crucial balance port is made from a flexible and durable 18AWG multi-strand silicone wire, chosen for its ability to handle repeated connection cycles without fatigue.
Size and Practical Fit
While exact physical dimensions are not specified, the board is designed as a central hub for your charging station. It accepts standard T-style connectors for the main battery output and uses a common balance port interface. The included set of safety protective T-plug silicone caps is a key practical component. These caps are used to cover any unused connector ports on the board while it is operating, which is a simple but effective measure to prevent accidental short circuits caused by stray metal objects or debris.
Uses and Placement

This product serves a specific function within the workflow of RC hobbyists and professionals who rely on multiple battery packs to extend their operational time.
Event or Professional Use
At racing events, drone light shows, or professional aerial surveying jobs, downtime for charging must be minimised. This board enables the rapid turnaround of multiple battery sets. By connecting four packs in parallel, their capacities add together (e.g., four 4S 5000mAh packs become a single 4S 20000mAh pack to the charger), allowing even chargers not designed for high C-rate charging to effectively deliver a faster overall charge cycle. The single balance charge required for the parallel group, versus four individual balance cycles, is a significant time saving.
Everyday Home Use
For the hobbyist at home, it simplifies post-run or post-flight maintenance. Instead of monitoring and swapping batteries on the charger every hour, you can connect all discharged packs that share a cell count (like your collection of 3S drone batteries) and initiate a single charge session. This means you can set it up and attend to other tasks, confident that all your packs will be ready at a similar time. The safety fuses add peace of mind for this unattended, though supervised, charging process.
Benefits and Buying Value

The value of this board lies in the tangible efficiency gains and managed risk it offers compared to charging batteries individually.
Reuse and Low Maintenance
The board itself is a durable, reusable tool. There are no consumable parts aside from the optional replacement of a fuse in the unlikely event one is triggered. The silicone wire and gold-plated connectors are chosen for longevity through repeated plugging and unplugging. The protective silicone caps help maintain the integrity of the connector ports over time by keeping them clean.
Why Choose This Product
This parallel charging board is a logical choice for anyone regularly charging more than one or two LiPo packs. Its key differentiators are the clear 4-pack capacity, the 35A current rating supported by its PCB design, and the inclusion of practical safety components like the 40A fuses and silicone caps. It provides a supported method to shorten total charging time without requiring you to invest in a more expensive, high-power charger, as it leverages the combined capacity of the parallel batteries to achieve effective charge rates.

