I've popped quite a few chargers, usually the extra amp bigger ones. Don't buy the big amp chargers; always get the smallest charger possible. They don't often pop, are tiny, and run cool.
Second thing is to use one of these. Plug both ends THEN select the charge time.
Omg. I just checked the polarity on the charger and I'm pretty positive that it is reversed of what is stated in the product description. The product description says 1+ and 3-. I put the red probe in the 1 pin, and the black probe (COM) in the 3 pin and the reading was -67.1v. Please tell me that my understanding of electronics isn't somehow broken, but that indeed the polarity is backwards what they stated. Gracious.
This is the product listing for reference. Thanks for the suggestion. https://www.amazon.com/Century-Digital-Countdown-Repeat-Function/dp/B01D3QEK4E/ref=sr\_1\_8?crid=Z3VTKGTWUI7G&keywords=timer+plug&qid=1680728859&sprefix=timer+plug%2Caps%2C110&sr=8-8