What are these battery clamps for?
These Wattstunde clamps let you link an electrical device to a battery without taking anything apart: place them on the terminals, plug the device into the other end of the cable, and you are ready. They suit situations where a permanent wiring job is not wanted: running a small inverter from a boat battery, testing a charger on a workshop bench, or helping out a motorhome appliance.
Who is it for?
Private users
Motorhome owners, boaters and DIY enthusiasts get a simple way to connect a leisure battery to a small load, with no special tools.
Professionals
In a workshop or during maintenance, a pair of sturdy clamps is useful for connecting measuring equipment, powering a test rig, or attaching a charger to a battery under inspection.
Build and dimensions
The cable is 1.5 m long and has a conductor cross-section of 10mm². That length gives you freedom to place the device away from the battery, for instance outside the engine bay or battery locker. Both clamps tighten onto the terminals by hand.
Setting up, step by step
- Switch off or unplug the device you want to power before handling anything.
- Identify the battery polarity and that of the device.
- Attach the clamp to the marked terminal first, then to the other one, never letting the two touch.
- Then connect the device and switch it on.
To disconnect, work the other way round. A clamp that wobbles on a terminal will heat up, so make sure the grip is firm and the terminal is clean.
Strengths
- No tools needed to fit or remove the clamps.
- 1.5 m cable for placing the device away from the battery.
- 10mm² cross-section suited to tidy wiring.
The set also fits easily into a drawer or toolbox, and works just as well for everyday jobs as for emergencies. Keep it in the vehicle or on the boat for the unexpected, such as hooking a spare battery to a small onboard device at short notice. Because nothing is bolted down, you can move the same cable from one battery to another whenever the job changes.
Technical specifications
- Brand: Wattstunde
- Conductor cross-section: 10mm²
- Length: 1.5 m
Safety
Before using these clamps, check that your device’s maximum current is compatible with the cable and that the circuit is protected by a suitable fuse; consult the manufacturer’s instructions for usage limits. Never let the two clamps touch each other while connected to the battery: a short circuit causes sparks and can damage the battery. Keep the setup away from any flame, since some batteries release gas while charging.
Care and storage
Wipe the clamps with a dry cloth after use and inspect the cable insulation regularly: if it is cracked or hardened, replace the whole set. Store the cable coiled without tight kinks, in a dry place, away from acid splashes.
