How to match the battery size to the electric bike frame?
A Complete Guide to Bicycle Battery Dimensions and Installation
Choosing the right battery for your electric bike is a crucial decision that affects not only the range and performance of your e-bike, but also riding comfort and safety. An incorrectly selected battery may not fit the frame or be poorly mounted, leading to damage and dangerous situations.
What should be measured in a bicycle frame?
Key Frame Measurements
-
1. Length of installation space
Measure the available length in the frame triangle (between the top and down tubes). This is the most important dimension – all our faucets are 36 cm long (except the BAG PLUS model, which is 46 cm). -
2. Height of space
Measure the vertical distance between the downtube and the top tube at the planned mounting location. Remember to leave approximately 2 cm of clearance for installation. -
3. Width between pipes
Check whether a 9 cm wide battery (standard width) or 17 cm wide (BAG PLUS) will fit between the frame tubes. -
4. Pipe inclination angle
Assess whether the frame tubes are parallel or convergent - this affects the stability of the ebike battery installation.
Expert Tip
It's best to measure in several places along the frame, as space can vary depending on location. Use a tape measure or ruler and record all measurements before purchasing the faucet.
Available sizes of REACTOR batteries
SLIM
Housing: Hailong 1
REGULAR
Housing: Hailong 2
PLUS
Housing: G80
MAX
Housing: POLLY G91
BAG PLUS
Housing: SSE (trunk)
Frame adapter included!
We include a FREE frame adapter with all SLIM, REGULAR, and PLUS batteries! This allows you to adjust the battery's position on the frame more precisely than the factory bike mounts allow. The adapter simplifies installation and ensures a stable battery mount to the ebike.
Note: Batteries in the MAX housing (POLLY G91) and SSE (trunk) do not require an additional adapter - in the case of the MAX model, it is already built into the battery strip.
How to choose the right battery?
Important information
- If the space in the frame is limited (height less than 10 cm), choose the SLIM model
- For standard frames with a height of 10.5-12 cm, the REGULAR or PLUS model will be ideal.
- If you have a lot of space (over 14 cm high), you can choose the most powerful MAX model
- For bikes with a luggage rack or when there is no space in the frame - choose BAG PLUS
Remember that the capacity of your bike's battery affects the range of your electric bike. Larger models offer higher capacity but require more space in the frame. Always leave about 2 cm of clearance around the battery for easier installation and removal.
Installation tips
Professional tips
- Before purchasing, take accurate measurements at 3 different points on the frame.
- Take into account cables and connectors - they need extra space
- Check that the battery will not interfere with other elements (water bottle, pump)
- If you have any doubts, please contact us - we will help you choose the right model
Ready to choose your battery?
Check out our full range of electric bike batteries and find the perfect model for you!
See all batteries