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How to Use Greenworks Batteries in Kobalt Tools

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How To Use Greenworks Batteries In Kobalt Tools

In my last post, I tried to answer the question, “Are Greenworks and Kobalt Batteries Interchangeable?” The answer is yes and no.

Greenworks and Kobalt batteries are incompatible out of the box, but they can be made compatible with a few minor modifications. In this post, I am giving you a tutorial on how to use Greenworks batteries in Kobalt tools.

This tutorial will also work for Snapper, Victa, and Powerworks batteries. I will be demonstrating using Snapper and Greenworks 60V batteries.

Note: This post is provided for informational purposes only. If you decide to make any modifications to a battery, do so at your own risk. The author takes no responsibility for your personal choices. Warranties may be voided by modifying original equipment, and personal injury may occur through the use of power tools. Electrical equipment is dangerous. Fire or equipment failure can occur if attempting to use parts not certified by the manufacturer or if batteries are damaged. You have been warned.

Why Would I Want to Use a Different Brand of Battery?

Several situations can make using a different battery brand attractive. I was able to get a Snapper 60V battery recently that was just 1/4 the cost of the Greenworks version of that model!

Unfortunately, that price cut may signal the the 60V Snapper line, which is Walmart exclusive, has been discontinued. It already appears Walmart started selling Powerworks 60V outdoor equipment to maintain an alternative.

Victa also eliminated their 80V line, so owners of these tools cannot get new Victa batteries. Whether saving money, replacing parts no longer available, or receiving a weed eater as a gift that is a different brand than your mower there are several reasons to use a different brand battery.

Why Can’t I Use a Greenworks Battery in a Kobalt Tool?

Kobalt and Greenworks batteries have different slots or grooves on the side to match the tools from that brand.

I took a picture of my 60V Greenworks battery next to a 60V Snapper battery to show the difference, and there are similar differences between 80V Greenworks and Kobalt batteries.

How To Use Greenworks Batteries In Kobalt Tools - 60V Greenworks battery compared to 60V Snapper battery

The guide rails the battery fits against are visible inside the mower’s battery cover.

How To Use Greenworks Batteries In Kobalt Tools - Greenworks mower battery bay guide rails

How Can I Make a Different Brand of Battery Fit?

There are two possible solutions to this problem.

  1. Cut or grind the rails out of the mower.
  2. Cut the case on the battery to fit different rails.

I chose option 2 so that I could get more tools using the battery system without modifying each one. I have seen pictures of lawn mowers modified with option 1, and the battery bay plastic fits the battery exactly.

It seems like removing each rail leaves a hole in the battery bay, exposing parts to moisture that are normally sealed. I didn’t want to risk damage by cutting permanent holes in my mower.

I modified a Snapper 60V battery to fit Greenworks equipment, but the method applies to the 80V batteries of this style. Double check everything for yourself before cutting! Fixing a mistake is much harder than preventing one.

Which Batteries are Potentially Compatible?

As I discussed in my previous post, batteries made by Global Tools using their design should be compatible with modifications.

There is not an official list of these batteries, so I have gathered one below. It is possible more exist, so let me know if you spot one I missed.

These 60V batteries all appear to be compatible with case modifications:

  • Greenworks
  • Snapper
  • Powerworks

These 80V and 82V batteries all appear to be compatible with case modifications:

  • Greenworks
  • Kobalt
  • Snapper
  • Victa
  • Powerworks

What Tools Do I Need?

Procedure to Modify Battery To Fit Another Brand

Step 1: Measure & Mark

Every battery I could compare seemed to have the same upper slots, and both sides had the same slots. The easiest way to measure and mark where to cut is to use a battery that already works!

TIP: Be sure to match the battery cases top to top and bottom to bottom, because it is easy to accidentally flip one battery the wrong way.

I marked length and width of the slot against the Greenworks battery using a silver Sharpie and a metal ruler to create full guide lines on the Snapper battery.

Step 2: Remove the Cell Pack

Open the battery case before cutting anything to remove the cell pack. This step prevents accidentally cutting a cell, which is a fire hazard.

A size 10 Torx (star) security bit works best to remove the battery case screws.

It is possible, with care and effort, to use a standard T-10 to remove the screws, but the security bit is handy for many projects. The security bit is worth having to save frustration. I recommend a set like this one.

How To Use Greenworks Batteries In Kobalt Tools - Greenworks 60V and Snapper 60V cell pack

On inside the Greenworks 60V cell pack looks nearly identical to the Snapper 60V cell pack.

Step 3: Cut the Case

Inside the battery case on both sides the plastic is thicker. The extra plastic allows more slots to be cut without leaving a hole in the case.

I used a Dremel in the Drill Press Workstation, router bit, and a clamped cutting jig, but cutting can be done several ways. A table saw with a guide also would work nicely.

If you are very confident and don’t need it to look pretty it is possible to hand cut with a Dremel or other tool. An advantage with the Drill Press Workstation or table saw is the ability to set a consistent depth and maintain a smooth line.

I set the depth using existing slots, while the Dremel was off, and put the bit down in the slot. Whatever you choose, take it slow and careful for the best result.

How To Use Greenworks Batteries In Kobalt Tools - Dremel 220-01 Rotary Tool Workstation / Drill Press

A simple but effective setup.

How To Use Greenworks Batteries In Kobalt Tools - Battery case inside for 60V and 80V lawn tools showing extra plastic

The plastic is thicker here on both sides.

I cut the upper slot first, because it required more attention. The existing slot on the Snapper case crossed where Greenworks needed a notch to the bottom.

I was able to switch to a cutting wheel for the lower part. After resetting the depth to match the wheel, the bottom was easy to complete.

How To Use Greenworks Batteries In Kobalt Tools - New slot in battery case to make Snapper battery work with Greenworks mower

First cut done!

Step 4: Reassemble & Test

Here is a look at the Snapper battery after I finished and cleaned it up. It doesn’t exactly look factory fresh, but it doesn’t look too bad either.

I have used the new battery in my mower. It works exactly like the one that came with it. At 1/4 the cost, it definitely was worth the time and effort.

How To Use Greenworks Batteries In Kobalt Tools - Snapper battery case made compatible with Greenworks mower

How To Use Greenworks Batteries In Kobalt Tools - Using a Snapper battery in a Greenworks mower

Fits like a glove!

Is It Possible to Create a Universal Battery?

It may be possible to create a “universal” battery for devices within a voltage family. Because only the bottom slots seem to change, a single large notch in the whole lower section could work.

For more information on why this is possible see my post, “Are Greenworks and Kobalt Batteries Interchangeable?

One downside is that the battery charger uses the lower slot to guide the battery when charging vertically, so charging horizontally would be required. I think that is the only issue.

Have you tried to convert one battery to another brand? Have questions? Please comment below!

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Maxime Ayotte

Tuesday 16th of November 2021

I guess a 3rd option would be to make and extension cord for the battery connector and connect the battery outside the tool. This way it doesn't damage either the battery or the tool itself.

Thanks for the article, very helpful!

Mike Engelhardt

Friday 20th of August 2021

Can I just take the outer case off of the old dead kobalt 60v and put it on the new green works 60v battery? Would the kobalt charger work with the green works battery as well?


Brad Scott

Friday 20th of August 2021

Yes, a case swap is possible and fairly easy, if you have the security bit to remove the screws. The Kobalt charger should work without problem.


Monday 25th of January 2021

Hello, I have Powerworks 82 battery and awnt to buy Greenworks 80 V trimmer. Will it work with some rails modification on the tool?

Brad Scott

Monday 25th of January 2021

Yes, they use the same nominal voltage, so they will be compatible. If I remember correctly, the 82V Greenworks devices are all part of their commercial series (intended for use by businesses) and 80V is residential, but other than the rails, the difference is just marketing.


Sunday 20th of September 2020

Thanks for the info on this site, managed to use a table saw to go through each side of the Kobalt 80V battery three times, to make the slots wide enough to work on my Greenworks tool. The battery also stayed in place for vertical mounted Greenworks charger, bonus.

Brad Scott

Sunday 20th of September 2020

That's great to hear! Setting the blade on a table saw is a great way to take care of this quickly. I just have a circular saw and a miter saw, or I might have given that a try.

John ONeill

Sunday 20th of September 2020

Will the greenworks G max work with any other manufacturers with modification?

Brad Scott

Sunday 20th of September 2020

No, but modifying the 40V batteries is very easy. The 40V batteries are also sold as Crafstman, Victa, Poulan, McCulloch, and Sterwins brands that I have found. The only thing seperating these batteries from working with each other are a small tab on either side of the top, next to the connectors, placed at varying widths. A quick snip with a pair of side cutters and you're in business!

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