Smart 12V chargers for lead acid and lithium batteries, shipped across the US and Canada.

How can we help?

Questions about which charger fits, an order, or a return. Send us a message and a real person will reply.

Contact us

Email

To confirm support@charge-wise.com

Which charger fits?

Tell us the vehicle and the battery model or the words printed on the battery. We'll tell you which charger to buy.

Order questions

Include your order number so we can find it quickly. You can also track an order yourself.

Enter your name.
Enter an email address, like name@example.com.
Write a short message so we know how to help.

Message sent

Thanks. We'll reply to your email, usually within one business day.

Shipping, returns and warranty

The short version. Full policies are linked in the footer.

Shipping

We ship across the United States and Canada. You'll get a tracking link when your order leaves us.

To confirm Delivery times, rates and the free-shipping threshold.

Returns

Changed your mind or bought the wrong chemistry? Contact us and we'll walk you through a return or an exchange.

To confirm Return window and condition rules.

Warranty

If your charger stops working, send us your order number and a short description and we'll sort it out.

To confirm Warranty length and coverage.

User guide

Connecting and charging, step by step. A printable PDF manual will be linked here.

How it works

Three steps in the fall. Nothing to do until spring.

  1. 1

    Connect it

    Attach the output lead to the battery: red to positive (+), black to negative (−).

  2. 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. 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.