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"AC Adapter Universal SoulBay 15W 3V 4.5V 5V 6V 7.5V 9V 12V DC Switching Power Supply Charger with 8 Interchangeable Tips for Household Electronics, 1250mA Max"

AC Adapter Universal SoulBay 15W 3V 4.5V 5V 6V 7.5V 9V 12V DC Switching Power Supply Charger with 8 Interchangeable Tips for Household Electronics, 1250mA Max

[ SPECIFICATION ] - AC Input: 100-240V 50/60 Hz, DC Output: 3V/ 4.5V/ 5V/ 6V/ 7.5V/ 9V 1.5A, 12V 1.25A max. You can easily Set the Voltage via a little key included in the package.

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Electronics
Power Accessories
AC Adapters

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1 comment of this product found across Reddit:

Columbus43219 /r/electrical

1 point

1970-01-20 11:32:52.111 +0000 UTC

OK... so this page on Amazon has an answered question about the battery on a similar sprayer https://www.amazon.com/Scotts-190567-Lithium-Ion-Battery-Technology/dp/B07NNWK7CT?th=1

and the answer is it's just two standard 3.7v 18650 batteries. So that makes it easier to guess.

Now.. THIS page has a question about the charger for a pump that LOOKS like the same one: https://www.amazon.com/ask/questions/Tx10JP79IYIT9C6/ref=ask_ql_ql_al_hza

The answer is "9v 15Watt charger"

Which gets us to here: https://www.amazon.com/SoulBay-Universal-Switching-Interchangeable-Electronics/dp/B0722WN5TG

With multiple barrel sizes to help match the plug size even!