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DIY  |  SKU: CTB5172-DIY

CTB5172 Snap-On® 7.2V Battery DIY CORE

$33.99 $39.99
Shipping calculated at checkout.

Charging information

1. Always ensure that the battery is not hot and is at room temperature before charging.

2. Once charged, remove the battery from the charger. Do not store the battery on the charger for extended periods of time. Please note that storing a battery in a charger that is not plugged into the wall, can potentially cause the battery to drain back into the charger. This was more common with older chargers and we have also noted it in some newer chargers.

3. It is recommended to not store the battery on the device when not in use. Storing the battery separately removes the possibility of the device slowly draining the battery. 

4. If you have not used the battery for 2-3 months, we would recommend recharging the battery and if possible, use them. This helps maintain their health.

5. Lastly, be sure to store your battery in a dry environment. If possible, avoid temperatures below freezing and above 110F to maximize battery life..


With this purchase, you do not need to send anything to us.


This is a DIY core for a Snap-On® CTB5172 battery pack. The run time of our battery packs is better than a brand new battery from the OEM but at a fraction of the cost. Our trained technicians work on Snap-On® brand batteries each day and have been working with many Snap-On® dealers for years. 

Click here to view a video of how to install our CTB5172 core.

Assembly color may vary.

Orders containing lithium batteries will ship by ground only regardless of the shipping method chosen.

Snap-On® is a registered trademark of Snap-On Incorporated. MTO Battery is not affiliated with nor endorsed by Snap-On®. 


Payment & Security

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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Customer Reviews

Based on 9 reviews
Gregory A.K.

Bought 3 replacement batteries for the 7.2 snap on. Fast delivery and easy to install. You can’t go wrong shopping here. Thank you MTO

Frank S.
Replacement Batteries

received 2 to replaced old failed snap on batteries
Great product ! easy install
they both are working great!

Yat C.
Easy install.

Got this to replace a dead 7.2v snap on battery. The video was helpful and it was easy to install. So far so good on the battery. Works like new. I went ahead and got 4 more of these batteries to replace dead ones I got on eBay.

Tired of tool truck prices? This Works Great!

I have bought other replacement batteries like these and they've been junk. These batteries come through much better quality, and work perfectly, and fitment is awesome. Absolutely recommend these guys to all my mechanic friends. Will definitely be purchasing more from these guys!

Easy DIY

Ordered 2, they arrived in a couple of days and it was an easy swap out, been running on the same charge for two weeks and still running strong.