Sun Joe cordless lawn mowers do not all use the same charging system. Some models use removable 24V IONMAX batteries, while others, such as the MJ401C, have a rechargeable battery installed in the mower.
Check your complete mower model before choosing a charger.
First, Identify Your Battery Setup
| Battery Setup | Example | How It Charges |
|---|---|---|
| Removable 24V IONMAX Battery | 24V and 48V IONMAX cordless mower models | Remove the battery from the mower and place it on a compatible 24V IONMAX charger. |
| Battery Installed in the Mower | MJ401C | Connect the charger directly to the charging socket on the mower using the charger specified for the unit. |
These charging systems are different. A charger designed for a removable 24V IONMAX battery should not be used in place of the charger specified for a mower with an installed battery.
Charging Removable 24V IONMAX Batteries
If your cordless lawn mower uses removable 24V IONMAX batteries, several charging options are available depending on how many batteries you need to charge.
24VCHRG-QC
The 24VCHRG-QC Quick Charger is designed for charging one compatible 24V IONMAX battery.
24VCHRG-DPC
The 24VCHRG-DPC Dual-Port Quick Charger can charge up to two compatible 24V IONMAX batteries at the same time.
24VCHRG-HS-DPC
The 24VCHRG-HS-DPC is the high-speed, dual-port option for compatible 24V IONMAX batteries.
Quick Charger Comparison
| Charger | Best For | Charging Setup |
|---|---|---|
| 24VCHRG-QC | Charging one compatible 24V IONMAX battery | Single-battery quick charger |
| 24VCHRG-DPC | Charging up to two compatible batteries at the same time | Dual-port quick charger |
| 24VCHRG-HS-DPC | High-speed charging for compatible 24V IONMAX batteries | Dual-port high-speed charger |
Charging time varies by battery capacity and charger. Follow the charging information for your exact battery and charger rather than applying one charge time to every 24V IONMAX battery.
What If My Mower Uses Two 24V Batteries?
Some Sun Joe cordless lawn mowers use two 24V IONMAX batteries together.
A dual-port charger can be convenient for these models because two compatible batteries can be connected for charging at the same time.
Always use the battery and charger models specified for your exact lawn mower.
What If My Mower Has an Installed Battery?
Some cordless lawn mowers do not use a removable 24V IONMAX battery. The MJ401C, for example, uses a 28V 4.0 Ah rechargeable lithium-ion battery installed in the mower.
The MJ401C manual states that the charger supplied with the mower matches the lithium-ion battery installed in the tool. Do not use another battery charger.
How Do I Charge the MJ401C?
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Connect the Charger to an Outlet
Plug the charger into an appropriate AC power outlet.
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Connect the Charger to the Mower
Insert the charger plug into the charging socket on the lawn mower.
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Check the Charger Light
The charger indicator illuminates red while the mower is charging.
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Allow the Battery to Charge
The MJ401C operator's manual lists an approximate charge time of 4 hours.
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Disconnect the Charger When Complete
The charger indicator turns green when the battery is fully charged.
Unplug the charger when the green light comes on.
Do not leave the MJ401C connected to the charger after charging is complete.
The operator's manual states that the charger does not automatically turn off when the battery is fully charged.
Do not operate the mower while it is charging.
MJ401C Charging + Storage Tips
- Fully charge the mower before its first use.
- Never store the mower with the battery in a discharged condition. Recharge it after the battery has been discharged.
- If the mower will be stored for a long period without use, recharge the battery every 6 months.
- Disconnect the charger from both the electrical outlet and the mower when no further charging is needed.
Can I Use a 24V IONMAX Charger with the MJ401C?
No. The MJ401C charging procedure is different from mowers that use removable 24V IONMAX batteries.
The MJ401C uses its specified charger connected directly to the mower's charging socket. Follow the charger instructions in the MJ401C operator's manual.
What About My Older ICHRG24-AC Plug-In Charger?
The ICHRG24-AC applies to the older removable 24V battery charging system. Do not use it simply because your mower is cordless.
If your mower uses a removable 24V IONMAX battery, check the exact battery model and use a charger approved for that battery.
If your mower is an MJ401C, this section does not apply to its installed 28V battery. Use the charger specified for the MJ401C and connect it directly to the mower's charging socket.
How Do I Know Which Charging System I Have?
Removable Battery
If the battery removes from the mower and slides onto a separate charging dock, use the charger specified for that removable battery system.
Installed Battery
If your mower is designed to charge by connecting the charger directly to a charging socket on the mower, follow the charging instructions for that exact mower.
Find Your Cordless Lawn Mower
Visit the Shop Joe Lawn Mowers + Dethatchers collection to locate your model.
For the MJ401C, visit the Sun Joe MJ401C Cordless Lawn Mower product page .
You can also visit the Shop Joe Product Manuals page and search using your complete mower model number.
Need More Help?
If you need help identifying the correct charger for your cordless lawn mower, contact Shop Joe Customer Support. Have your complete mower model and charger model available.