A rechargeable battery spins a motor that drags the rivet’s mandrel backward, mushrooming the rivet body until the mandrel snaps — about one second of work per rivet.
Squeeze the trigger and the tool’s jaws bite the steel stem poking out of the rivet, and a motor hauls that stem backward with thousands of pounds of pulling force. The rivet’s body balloons on the far side, the stem snaps, and the tool resets. What changes between models is battery voltage, pulling force, and where the broken stems end up.
What Happens Inside the Tool During One Pull
The motor never touches the rivet directly; it drives a pulling mechanism through the nose.
- Grip: the jaws clamp the mandrel, the waste stem running through the center of the rivet body.
- Pull: the motor draws the jaws back, and since the rivet head can’t pass through the hole, the rivet body collapses outward on the blind side.
- Clamp: the flared body pins the two workpieces together.
- Break: the mandrel reaches its designed breaking point and snaps off.
- Reset: the jaws release and return, and the spent mandrel drops into a collector cup or ejects from the nose piece.
Both collector styles exist on cordless tools, and the setting mechanism is identical either way.
Where the Battery Fits In
The battery is the power source, not the muscle. Cordless rivet guns use rechargeable lithium-ion packs, and the pack’s voltage sets how hard the motor can pull.
Brushless motors show up across the current generation.
One rule from the tool manuals matters more than the spec sheet: use only original Li-ion batteries with the voltage shown on the tool label. Mismatched packs are how motors die early.
What the Job Actually Looks Like
Drilling the hole sets up everything else. Match the drill bit to the rivet diameter, because an oversized hole lets the rivet pull through instead of clamping.
- Drill the matched hole through both layers.
- Thread the correct nose piece onto the tool for that rivet size.
- Insert the rivet into the hole.
- Hold the tool perpendicular to the workpiece — an angled tool deforms the rivet head.
- Pull and hold the trigger until the mandrel breaks and the tool releases. That release is your signal the set is complete.
- Empty the spent mandrels. They’re sharp, so dump them somewhere safe rather than into a pocket.
Two habits prevent most problems: pull adjusting tools and screwdrivers off the workpiece before switching the machine on, and keep the nose square to the surface through the whole pull.
If you’re weighing specific models against each other, a tested roundup of battery powered rivet gun options saves a lot of spec-sheet squinting. The manuals themselves are the final word on setup: Byler Rivet’s Marson BT-5 and BT-6 cordless rivet gun manual walks through nose-piece selection and battery handling step by step.
What Changes Between Models
Three specs separate a light-duty tool from a serious one, and the price gap reflects all three.
| Model Example | Key Specs | Typical Cost |
|---|---|---|
| Marson BT-5 cordless rivet tool | 18V, 3/32 in. to 3/16 in. capacity, 2,248 lbs pulling force | About $727 |
| Powerbird Rivet Gun 110V | 14,000 N setting force, 20 mm stroke, rivets to 6.4 mm | About $1,715 |
| RivRite R12 | 20V brushless motor, 18V rated lithium battery | Varies by seller |
| Generic 18V brushless cordless tool | 18V brushless, 1.5 m/s² vibration | Varies by seller |
Prices, included batteries, and voltage listings shift by seller and marketplace, so treat any figure as a snapshot rather than a rule.
The short version: a battery rivet gun converts battery power into a straight backward pull, and the rivet does the rest. Match the hole to the rivet, keep the tool square, and the mandrel breaking confirms the joint is set.
FAQs
Do I need to hold the trigger the whole time?
Yes. Keep it held until the mandrel snaps and the jaws release. Releasing early leaves the rivet partly set, and a half-collapsed body won’t clamp properly. If that happens, drill the rivet out and start with a new one.
Why did my rivet head deform?
Almost always because the tool was angled rather than square to the surface. An oversized drill hole can cause similar damage, so match the bit to the rivet diameter.
Can I use any lithium battery in the tool?
No. The manuals specify original Li-ion batteries with the voltage shown on the tool label. A wrong-voltage pack can strain the motor, and off-brand packs may not deliver the current the pulling mechanism needs.
References & Sources
- Byler Rivet. “Marson M38990 BT-5 / M38996 BT-6 Battery Cordless Rivet Gun Manual.” Source for the 18V, 2 Ah battery pack, 0.866 in. stroke, 2,248 lbs pulling force, 4.21 lb weight, and 45-minute recharge.
- JRP Rivets. “JRP Battery Tool Manual RB66.” Source for 18V brushless technology, vibration magnitude 1.5 m/s², and battery-handling safety guidance.
- RivRite. “RivRite R12 Instruction Manual.” Source for the 20V brushless DC motor and 18V rated lithium battery spec.
