Universal Multi-Chemistry Charging That Replaces The Whole Drawer Of Spare Units
AmpForge pairs 3-mode pulse charging with auto 6V/12V detection and 60W output — handling every battery in the garage from one unit, with no adapter tax. One charger, every vehicle.
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How It Works
How It Works
- Clip the alligator clamps to the battery posts (or use the SAE quick-disconnect lead)
- Plug the unit into any 100-240V wall outlet
- Press MODE to pick STD&AGM, Lithium/LiFePO4, or Repair
- The charger auto-detects 6V or 12V and sets safe charge current
- Walk away — float mode keeps the battery topped off without overcharge
- Display shows live voltage and stage so you know when charging is complete
What's Included
What's Included
- AmpForge 60W charger unit (1)
- Alligator-clamp lead with reverse-polarity guard
- Ring-terminal lead with SAE quick-disconnect for permanent install
- 100-240V power cable
- User manual with chemistry/voltage chart
- 12-month support documentation
Shipping & Returns
Shipping & Returns
We offer free shipping for all orders. Order processing
takes 1-3 business days before shipment. Once your item/s is dispatched,
the estimated delivery time is:
- USA: 2-12 business days
- UK: 5-13 business days
- Australia: 5-13 business days
- Canada: 2-12 business days
- Europe: 5-13 business days
AmpForge
Built For The Garage Where Three Different Batteries Live At Once
All-Chemistry Mode Switch
One press of MODE moves between STD&AGM, Lithium-LiFePO4, and Repair. Covers AGM, GEL, SLA, Flooded, WET, EFB, and lithium without a separate unit.
6V + 12V Auto-Detect
Charger reads battery voltage and sets output safely — 6V for the classic restoration, 12V for the truck. No hardware switch, no wrong-mode disasters.
8-Point Protection Stack
Reverse-polarity, short-circuit, overcharge, overload, temperature, voltage-spike, overheat, undervoltage guards. Hook it up backward, nothing fries.
Climate-Compensated Output
Internal sensor adjusts current from 10°F garage cold to 100°F summer heat. Temperature-compensated charging without paying double for the EU unit.
What our 17,000+ Customers say
Based On Real and Honest Experiences
AmpForge changed the way my whole garage runs. I used to have three different chargers in three different drawers, plus a tangle of adapters I could never find. Now there's one unit, and every battery in the place gets the same care.
Bought it for the Indian Chief sitting through a Minnesota winter. Garage gets to -10°F and the previous tender quit working in the cold. This one held the AGM at full all season — turned the key in April, started right up.
I was a 'voodoo or real' skeptic on pulse repair. Hooked it up to an old AGM I was about to throw out, ran Repair mode overnight, and it climbed from 10.2V to 12.6V over three cycles. Color me converted.
Frequently Asked Questions
How long does it take to charge a dead motorcycle battery?
How long does it take to charge a dead motorcycle battery?
At 60W output, a typical 12V motorcycle battery (8-12Ah) goes from low to full in about 2-4 hours. Larger 50Ah AGM marine batteries take 8-12 hours. The display shows live progress so you know when to unplug.
Can I leave it connected all winter without overcharging?
Can I leave it connected all winter without overcharging?
Yes. Once the battery hits full, the unit drops to float mode and only delivers a trickle when voltage sags. Hook it up in October, walk away, and the bike starts in April without acid loss or sulfation buildup.
What happens if I clip the clamps on backward?
What happens if I clip the clamps on backward?
The reverse-polarity guard cuts power before any current flows. No spark, no blown fuse, no fried ECU. You'll see an error on the display — swap the clamps and the unit resumes normally on the right polarity.
Does it really work on a 1965 Mustang or other 6V classic?
Does it really work on a 1965 Mustang or other 6V classic?
Yes. The unit auto-detects 6V vs 12V at the clamps. Pre-1956 GM, Ford, and Mopar 6V systems charge correctly without any switch flip. Same unit handles the 12V battery in your daily driver.
Will it bring back a battery that has been sitting dead?
Will it bring back a battery that has been sitting dead?
The Repair mode uses high-frequency pulses to break sulfation off lead plates. It works on neglected batteries with some life left, not every time. If a cell is shorted or completely dry, no charger brings it back — the chemistry is gone.
Does it support lithium batteries on the new motorcycle?
Does it support lithium batteries on the new motorcycle?
Yes. The Lithium/LiFePO4 mode runs the correct charge profile for lithium-iron-phosphate packs, which need a different curve than lead-acid. Safe on the new bike, the lithium accessory bank in the boat, and lithium lawn-tractor batteries.
Will it run on my 240V European outlet or sailboat shore power?
Will it run on my 240V European outlet or sailboat shore power?
Yes — the input accepts anywhere from 100V to 240V, 50/60Hz. Use it in the US garage, on a European trip with a plug adapter, or on dockside shore power without a step-down transformer.
Can I use it as a jump-starter on a totally dead battery?
Can I use it as a jump-starter on a totally dead battery?
No. AmpForge is a charger and maintainer — not a jump-starter for high-amperage engine cranking. For a no-crank battery, charge it for 30-60 minutes first and then turn the key, or use a separate jump pack.