Features: 
1. Jointable structure with mortise and tenon joints: The mortise and tenon buckles between single boxes can be freely combined, allowing for flexible series, parallel, and mixed series parallel connections. Battery packs can be freely built without the need for glue or welding brackets.
2. Non welding design: Relying on brass connectors and m3 screws to press and conduct electricity, there is no need for an electric soldering iron to weld the battery. It is easy to disassemble and assemble, and the battery can be replaced at any time, suitable for novice diy and teaching experiments.
3. Hardware specifications: Current carrying capacity of 5-10a, suitable for small and medium power devices, not suitable for high-power discharge, suitable for diy power supply, experimental testing, portable energy storage.
4. Complete set of hardware accessories: Equipped with brass screws, nuts, square pillars, wire noses, spring spring clips, brass conductive connection pieces, transparent upper cover and side cover are complete, and only need to be assembled by oneself when in hand.
5. Wide range of use: Widely applicable to self-made mobile power banks, portable power banks, and small capacity outdoor backup power supplies; voltage can be freely adjusted in series and parallel.

Parameters: 
Name: spliceable battery box (shipped without batteries)
Material: plastic pc+abs
Color: black
Applicable battery: 18650/21700 (optional)
Splicing instructions: supports unlimited splicing of long edges, short edges are not recommended for splicing
Usage tip: the product supports parallel connection, series connection, and can be connected using copper wire or copper sheet
Applicable scenarios: flat head 21700/18650 battery box

Package include:
Battery box * 1
Accessory package * 1