USB-C powered
Plug it into a phone charger, a laptop charger or a power bank. No outlet next to the bike? It doesn't matter.
How it works
Store it. Start it.
A pocket-size smart charger that keeps your 12V battery full while the vehicle sits. Plugs into any USB-C charger.
Shop chargersMade for the off-season
Batteries rarely die of old age over winter. They die because they slowly drain while the vehicle sits. Chargewise clips onto a 12V battery, runs from USB-C power, and keeps it full until you're back.
Runs on USB-C
Works with USB-C PD and QC chargers, so a phone charger or a power bank is all it needs.
56 mm and 180 g
Small enough to stay on the battery all season or ride along under the seat.
Charges, then maintains
Brings the battery to full and holds it there with small top-ups. Leave it connected for months.
Find your charger
Pick what you store. We'll tell you which battery it most likely has, and which of the two chargers fits it.
MotorcycleBoatSnowmobileATV & UTVJet skiRV & camperClassic carLawn tractor
Motorcycle
Lead acidorLithium
Most motorcycles use an AGM lead acid battery. Some newer sport bikes ship with lithium, so check the label on the battery.
What makes it different
Pocket size
56 mmand 180 g
Small enough to tuck under a seat or leave on the battery for the whole season.
Wakes sleeping lithium
When a lithium battery drops too low, its BMS switches it off. The lithium charger detects that and wakes it back up.
Lithium chargerGentle output
1.2 A12V, 0.75 to 1.2 A
A low, steady current made for maintaining the smaller batteries in bikes, boats, sleds and mowers.
Two labels, one job
Green
Blue
Green for lead acid, blue for lithium. Same size, same USB-C power, same set-and-forget charging.
Compare them
No outletneeded.
Storage units, marinas and back sheds rarely have a spare outlet. Chargewise runs from USB-C, so you can top up from a power bank, a wall charger or the USB-C port in your truck.
Shop the chargers
Same size, same USB-C power. Pick the one that matches the chemistry printed on your battery.
Lead acid or lithium?
Both chargers are the same size and run on the same USB-C power. The only thing that decides it is the battery.
| Feature | Green labelLead acid | Blue labelLithium |
|---|---|---|
| Battery types | Flooded (wet), gel, AGM | Lithium-ion, LiFePO4 |
| Your battery label says | AGM, GEL, SLA, flooded or maintenance free | LiFePO4, lithium iron phosphate or lithium-ion |
| Output | 12V, 0.75 to 1.2 A | 12V, 0.75 to 1.2 A |
| Power input | USB-C, PD and QC | USB-C, PD and QC |
| Size and weight | 56 mm, 180 g | 56 mm, 180 g |
| Wakes a battery in BMS protection | Not needed for lead acid | Yes |
| Price | $39.95 | $49.95 |
| Shop | Lead acid charger | Lithium charger |
Not sure? The chemistry is printed on the battery case. If you can't find it, send us the battery model and we'll tell you which charger fits.
How it works
Three steps in the fall. Nothing to do until spring.
- 1
Connect it
Attach the output lead to the battery: red to positive (+), black to negative (−).
- 2
Plug in USB-C
Use a USB-C PD or QC power source: a wall charger, a power bank or a vehicle USB-C port.
- 3
Leave it
It charges the battery to full, then switches to maintaining. Leave it connected until the season starts.
Questions before you buy
Can't find your answer? Ask us and a real person will reply.
Which charger do I need?
Check the label on the battery. AGM, GEL, SLA, flooded or "maintenance free" means lead acid. LiFePO4 or lithium means lithium. Both chargers are 12V only.
Can I leave it connected all season?
Yes. That's what it's for. Once the battery is full, the charger switches to maintaining and only tops it up as it drains.
What USB-C power source does it need?
Any USB-C charger or power bank that supports PD or QC fast charging. Most modern phone and laptop chargers do.
Will it work on a 6V or 24V battery?
No. Both chargers are made for 12V batteries only.
What vehicles is it for?
Anything with a 12V battery that sits for weeks or months: motorcycles, boats, jet skis, snowmobiles, ATVs, RVs, classic cars and lawn tractors.
Do you ship to Canada?
Yes. We ship across the United States and Canada.
Storage guides
Short, practical reads for putting a vehicle away and getting it running again.
How to store a motorcycle battery for winter
Leave it in or take it out, how full to keep it, and where to put the charger.
Read the guideLead acid or lithium: how to tell which you have
What to look for on the label, and why the wrong charger matters.
Read the guideCan you leave a charger on all winter?
The difference between a trickle charger and a smart maintainer, explained.
Read the guideWe're here to help
Contact us
Not sure which charger fits? Send us the battery model.
Get in touchShipping and returns
Delivery times across the US and Canada, and how returns work.
Shipping detailsWarranty
What's covered and how to make a claim.
Warranty detailsUser guide
Connecting, charging and what the light on the charger means.
Read the guide