The main supports used in electrification kits
When we talk about battery supports for electrification kits, it is not just about the battery but also the case + fixing rail. Each family of cases has its own support, dimensions, and capacity.
1. Hailong (Shark)
This is the most common support on Bafang, Tongsheng kits...
Features:
- Rail screwed onto bottle holder inserts.
- Sliding battery locked by key.
- Available in several sizes (Hailong 1, 2, Max).
- Typical capacity: 10 to 25 Ah.
Advantages:
- Very easy to replace.
- Wide choice of batteries.
- Numerous mounting accessories.
2. Polly DP (DP-5, DP-6, DP-7, DP-9)
The Polly family is an evolution of the Hailong cases.
Features:
- Rail similar to the Hailong.
- Larger cases.
- Suitable for modern 21700 cells.
- Capacities can exceed 1200 Wh.
The DP-9 can accommodate up to 91 cells depending on the configuration.
Interest for a cargo bike:
Excellent choice when range is a priority.
3. "Bottle" batteries
It is designed to take the place of a traditional bottle holder on the bike's down tube.
Its name comes from its shape, which resembles a bottle or a large bike canister.
Features
- Mounting on bottle holder inserts.
- Narrow and discreet rail.
- Removable battery with lock.
- Generally thinner than a Hailong.
At the level of the mount
The mount is generally much simpler than a Hailong mount:
- aluminium or plastic rail,
- two standard M5 bottle holder screws,
- sometimes a third anchoring point.