Here’s a little nugget of wisdom that might surprise you – there’s actually a proper way to charge a jet ski battery.
You’d be amazed at how many riders get it wrong, only to end up with a lifeless battery when they need it the most.
But fear not, because I’m here to share the scoop on the right way to juice up your jet ski’s battery. Charging it correctly can make all the difference in keeping your water adventures smooth sailing. So, let’s dive into the dos and don’ts of charging a jet ski battery and ensure you’re always ready to hit the waves!
How To Charge Jet Ski battery
To charge a watercraft battery, it’s important you connect the positive charger cable first and then the negative cable. When disconnecting the battery from the charger, you must do the negative cable first and then the positive. Doing it in this order cuts down on sparks and protects the sensitive computer components better.
To get a proper charge on your jet ski battery, it’s best you take it out of the jet ski and store it somewhere dry. Charging a battery in the jet ski is not ideal and not safe.
Do not charge your jet ski battery with a battery charger that is over 2 amps, 750ma to 2 amps is the charging amps you want to use.
- Make sure the machine is in a secure area where water can’t get to the battery charger, or it won’t roll away on the trailer.
- Make sure the PWC is near a power outlet if you’re using a wall charger or make sure you have a long enough extension cord. (See What You Need Below for more details)
- Remove any access panels so you can get to the battery. The battery location is either in the front, middle, or rear. Yamaha and Kawasaki’s batteries are mostly in the rear, under the passenger seat. Sea-Doo is often under the driver’s seat, but 2010 to 2015 it would be in the rear or front. 2016 and up Sea-Doo it’s mostly under the driver or in the front.
- It’s best you disconnect the negative cable (black) from your battery when charging, as to protect the computer on the craft.
- Connect the positive (red) charger clip to the positive (red) post of the battery.
- Connect the negative (black) charger clip to the negative (black) post of the battery.
- Plug in your battery charger to the wall and wait for it to power on and give you the okay.
Before you wander off, you’ll want to wait for the battery charger to test the battery to see if it will take a charge or not. Follow the instructions on your charger to see what each light means.
How To Disconnect Battery Charger
- When battery is charged disconnect from the wall outlet first.
- Remove the negative battery charger cable.
- Remove the positive battery charger cable.
- Reconnect battery to watercraft, positive first and then negative cable.
What You Need
- Smart Battery Charger (Amazon Link Ad) (under 2 amp @ 12 volts)
- Water Resistant Extension Cord (Amazon Link Ad)
- A splitter if charging more than one ski at a time
- Or use a Solar Charger as we talk about below
How Often to Charge Battery?
How often you charge your jet ski battery will depend on how often you don’t ride. For most people, this means charging your battery once a year during or after getting it out of winter storage.
If you don’t ride for over a month, it’s best to charge it the night before you ride or keep a smart battery charger on it.
The number one cause for a jet ski not starting after getting it out of storage is because the battery died. So make sure to charge your battery the night before you want to ride!
12-Volts Is Most Common
Most, if not all, jet skis use a 12-volt battery. The biggest thing to worry about is the physical size of the battery.
Every battery is given a size, for example, a typical size for a Sea-Doo is a size 30, 20, or 16. Make sure you get the correct size battery for your watercraft when you replace it.
It can take several hours, sometimes overnight, to charge a PWC battery. How long you should charge a battery should at least be for 4 hours, but I recommend letting the smart charger charge it until it’s fully charged.
The most common thing I see happen is that someone forgets to keep their battery charged during the winter and when spring comes around they want to ride. So they hop on their jet ski and find out that the battery is dead. If they kept a smart battery charger or the solar charger on the jet ski during the winter, then they could be riding.