Frame sticking in? Measure that corner
Wah lau this one ah, the frame and lid steal space until the rectangle become some funny shape. A frame corner and the lid can turn a simple rectangle into a very different shape.
Confirm plus chop cannot anyhow measure only the easy side. Draw the full T-shaped or stepped outline, mark each section’s length, width and height in millimetres, and include brackets, locks and narrow openings.
Can fit in, can take out?
Aiyo bro, space behind the opening got no use if the battery cannot get through. The opening may be smaller than the space behind it, and the battery also needs clearance for insertion and removal, plus room for the cable and connector.
Steady lah, send one wide photo and close views with a ruler. A simple sketch helps connect the numbers, and show where the cable needs to leave the case.

Outside looks big, inside say no
Wah lau, outside size can bluff until very convincing. The holder locates the cells, insulating sheets separate nearby parts, and busbars, terminal tabs, the BMS and cable bends each need room.
See how the layers fit together in the workshop →
Shape settled? Electricals still need a look
Aiyo bro, send the whole setup in one shot, no need play guessing game. Add the bike or equipment model, battery and charger labels, connector photos, and any controller and motor details u have if parts have changed.
Don’t play play, capacity cannot settle the shape for u. We need to review the shape and electrical requirements together.
Steady lah, Custom Battery lets u choose options and see the total. Put the dimensions and size limits in the order notes, and ask before ordering if the fit is still unclear.



