Sun Joe MJ401E Pro Electric Lawn Mower: Charger Options Compared

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If you searched for a sun joe mj401e pro electric lawn mower, you may be looking for a mower, a battery or a charger. The listings used for this guide do not describe any mower. They are replacement chargers for Sun Joe MJ401C-series mowers, including the MJ401C-Pro, and they name MJ401C model numbers rather than MJ401E. This guide compares the three charger listings, shows where each one conflicts with itself, and explains how to confirm a match before you order.

At a glance: the 3 chargers, by their own spec fields

Pick	Output	Flag
PDEEY (for MJ401C)	29V; specs say 2A/100W, bullets say 0.9A at 29V	Amperage/wattage figures conflict between specs and bullets — rely on neither until clarified; no warranty length stated
29V Charger (for MJ401C-XR)	29V DC at 0.9A (per bullets)	Input conflicts: specs say 120V, bullets say 100-240V; not compatible with other Sun Joe models
Mrgru (for MJ401C-CHRG)	29V, 26.1W; 0.9A per bullets	Input conflicts: specs say 240V, bullets say 100-240V; specs also contain apparent data errors (compatible phone model “incompatible,” enclosure material “grass”) — treat those fields as unreliable

Specs are from each product’s Amazon listing, checked 2026-10-14 (full citations in this guide’s sources section). All three listings have an input-voltage or output-amperage conflict between their spec table and bullets — this guide flags each rather than resolving it silently. Confirm your outlet’s voltage range and your mower’s exact model number before ordering any of these.

Quick answer

Confirm the model first. The listings name the MJ401C, MJ401C-XR, MJ401C-XR-SJB and MJ401C-Pro, and none of them names an MJ401E. If your mower matches one of those names, the ZENTROX listing states compatibility with that series and a one year warranty. The PDEEY and ZENTROX listings each state a 6.6 foot cable, and the Mrgru listing states a North American two-pin plug. Every listing has conflicting input or output figures, so do not order any of these chargers until the input range and the model match are confirmed on the listing.

Why the listings matter for a mower owner

A charger is not a mower, but the charger decides how the battery is treated. A battery charger stores energy in a battery by running current through it. The charging protocol depends on the size and type of battery, and some battery types cannot withstand overcharging. Chargers may have temperature or voltage sensing circuits. The charger’s match to your mower therefore matters more than the cable length.

What the three chargers have in common

All three listings describe a charger for the Sun Joe MJ401C family, and all three list a 29 volt DC output at about 0.9 amps. Each one names protection features: the PDEEY listing names over-voltage, over-current and over-heat protection, the ZENTROX listing names over-voltage, over-current, over-temperature and short-circuit protection, and the Mrgru listing names over-voltage, over-current and short-circuit protection. The listings do not explain how those features work, so read them as statements rather than guarantees. The PDEEY listing also mentions an LED indicator, and the manual for your mower should explain what each light means before you rely on it.

Where each listing conflicts with itself

The PDEEY listing’s specs give an amperage of 2 A and a wattage of 100 watts, while its bullets give an output of 0.9 amps at 29 volts. Rely on neither the 2 A figure nor the 100 watt figure until the listing clarifies them.

The ZENTROX listing’s specs give an input voltage of 120 volts, while its bullets give an input range of 100-240V AC. The two figures describe different input ranges, so check the range against your own outlet.

The Mrgru listing’s specs give an input voltage of 240 volts, while its bullets give 100-240V. Its specs also contain fields that look like data errors, such as a compatible phone model set to incompatible and an enclosure material set to grass. Treat those fields as unreliable.

Worked example for a cable run

The PDEEY and ZENTROX cables are 6.6 feet long. Then 6.6 minus 4 equals 2.6, so about 2.6 feet of cable is spare. Coil the spare length away from the blade area and the walkway, and follow the manual for the charging position. If the spot is farther away than the cable reaches, move the mower or add a cord that the manual allows. Write the distance on a piece of paper before you order, so you can compare it with the cable length on each listing without measuring again.

How to choose

Start with the model number on your mower’s label. Find an exact match with one of the four MJ401C names in the listings. If the label reads MJ401E, none of these listings confirms the match, so check the manual or the seller before you order.

Then check the input range against your outlet. The ZENTROX and PDEEY listings state a 100-240V input in their bullets. The Mrgru listing’s specs state 240 volts, which may not suit every outlet. Confirm the range on the listing that you buy.

Then check the warranty and the cable. A warranty is a useful tie-breaker when the other figures are close, but it does not confirm fit, so the model and input checks come first. Read the warranty terms on the listing, and keep the order record in case you need to contact the seller. The ZENTROX listing states a one year warranty. The PDEEY and ZENTROX listings state a 6.6 foot cable, and the Mrgru listing states a North American plug type.

Mistakes to avoid

Ordering on the model number alone. The listings name MJ401C models, and your mower may carry a different label.

Trusting a single input figure. Two of the three listings give different input values in different fields.

Assuming a charger works with other Sun Joe models. The PDEEY listing says it is for the listed MJ401C models only, and the ZENTROX listing says it is not compatible with other models.

Overlooking the cable reach. A cable that is too short forces you to place the mower where the charger cannot reach.

Keeping a mismatched charger. If a listing does not match your label, do not connect the charger to the mower to see what happens. Ask the seller or check the manual first.

Charging and storage basics

Follow the manual for the charging position and the length of each charge. Store the charger in a dry place away from the mower’s blade, and disconnect it when the battery is charged. These are general steps, and the manual for your mower overrides any general rule in this guide.

Reading a charger label

Read four things on each listing before you order: the model names it claims, the input range, the output voltage and current, and the plug and cable. The listings place these figures in different fields, so read the specs and the bullets together. If the two disagree, the listing has not settled the question, and you should ask the seller or check the manual that came with your mower.

The output figures are the easiest to compare. All three listings state 29 volts at about 0.9 amps, which is the output the MJ401C family’s charger is described as using. The input range is harder. One listing states 120 volts, another 240 volts, and all three bullet lists give 100-240V. Those are not the same statement, so read the input range before you match it to your outlet.

Input range and your outlet

A charger’s input range tells you which supply voltages it accepts. Check the voltage at the outlet where you will charge the mower before you order, and compare it with the input range on the listing. If the listing states only one voltage, confirm that it matches your outlet. If the listing gives a range, confirm that your outlet falls inside it.

Cable length and placement

The PDEEY and ZENTROX listings each state a 6.6 foot cable. That length sets how far the charger can sit from the mower. Measure the path from the outlet to the charging spot, and leave slack for coiling. The listings do not describe an extension cord, so follow the manual before you add one.

Where each listing is strongest and weakest

The ZENTROX listing is the most complete on compatibility: it names the MJ401C series, states a one year warranty and says it is not compatible with other models. Its input figures still conflict between the specs and the bullets.

The PDEEY listing gives a clear cable length and lists protection features, but its amperage and wattage conflict with its output bullet.

The Mrgru listing gives a CE specification and a North American plug type, but its input voltage conflicts with its bullets, and several of its specs look like data errors. Use it only if you can confirm every figure on the listing.

What to do if your label reads MJ401E

None of these listings names an MJ401E. Check the label on your mower, then the manual, and contact the seller with the exact label text before you order. Do not assume that a charger for a close model number will fit. If the label reads MJ401C or a listed variant, the match is clearer, but still confirm it on the listing.

Related charging guides

For battery charging problems, see Best Lawn Mower Battery Not Charging. For charging accessories more broadly, see Best Charging System for Lawn Mower. For a different brand’s charger, see Best Battery Charger for Troy Bilt Lawn Mower.

Checking the output match

The MJ401C family charger is described across these listings as 29 volts DC at about 0.9 amps. Match that output to the figure on your mower’s own label or manual, not to a summary. If your label gives a different output, the listing does not match, even if the model number looks close. Treat a mismatch as a reason to stop and check, not as a reason to try the charger.

Who should choose which charger

Choose the ZENTROX listing if the stated warranty and a clear model list matter most to you, and if you can confirm its input range against your outlet. Choose the PDEEY listing if the cable length and the protection list matter most, and if you can resolve its amperage and wattage conflict on the page. Choose the Mrgru listing only if you need a North American two-pin plug, and verify the input range and model match yourself, because several of its specs look unreliable.

FAQ

Does one of these chargers fit an MJ401E mower?

None of the listings names an MJ401E. They name MJ401C, MJ401C-XR, MJ401C-XR-SJB and MJ401C-Pro. Check your mower’s label and the manual before you order.

Is a 29 volt charger safe to use?

Use the charger that matches your mower’s manual, and follow the manual for connection and storage. The listings name protection features, but they do not give a safety rating, so do not assume one.

Which charger has a warranty?

The PDEEY and Mrgru listings do not state a warranty length in their specs or bullets.

What does the cable length mean for me?

It sets how far the charger can sit from the mower. The PDEEY and ZENTROX listings each state 6.6 feet. Measure the distance from the outlet to the charging spot before you order.

Why do the input figures differ?

The listings give different input values in their specs and bullets. The ZENTROX listing shows 120 volts in its specs and 100-240V in its bullets, and the Mrgru listing shows 240 volts in its specs and 100-240V in its bullets. Check the input range on the listing you buy, and match it to your outlet.

Can I use a charger for a different Sun Joe model?

Not unless the listing names that model.

Do all three chargers use the same output?

The listings describe the same nominal output, which is 29 volts DC at about 0.9 amps. The PDEEY specs show 2 A in one field, so that figure does not match the output in its bullets. Confirm the output on each listing and on your mower’s manual, and do not rely on a single field to make the decision.

Bottom line

Choose the charger whose listing names your exact mower model, then confirm the input range against your outlet. The ZENTROX listing offers a stated warranty, the PDEEY listing offers a 6.6 foot cable with conflicting ratings, and the Mrgru listing offers a North American plug with several unreliable fields. Do not order any charger until the model match and input range are confirmed on the listing.

Sources

• Battery charger: how a charger runs current into a battery, the protocol depends on battery type, and some batteries can be damaged by overcharging.