Modding an electronic device to run off AC instead of Battery

Thread Starter

007craft

Joined Mar 13, 2019
1
Hello. I have an electronic device here that I want to mod so it runs off AC, instead of the battery pack. Its a Keon (Sex toy, ha) that is powered by a motor, connected to a controller. I opened it up and it looks relatively simple. See pictures below.

Overall Unit. Battery on the left, Motor on the bottom, mainboard on the right and buttonboard up top.

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Closeup of the battery (14.8V) 700mAh rated
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The mainboard. Bottom left is the battery connection. Bottom right is the motor connection (It connects to another little board under the motor). Right side is 2 LED connections on the front of the unit and a connection to the buttonboard.
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the buttonboard. This is the power/mode button and the charging port.
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So the thing about this device is that it does NOT work while charging. Once the battery is dead, you need to charge it before you can operate it again. I want to simply remove the battery (Or leave it in) and replace it with a barrel plug to connect to an AC adapter. Is it that simple, and then I just use an AC-DC power brick with outputting at around 14.8V (I have a switching power adapter I can set to 15v, 2.4A)?

I read about a similar mod somebody did for a seperate device that wouldnt work while charging (Read here: https://www.element14.com/community/thread/49891/l/replacing-a-li-ion-battery-with-wallpower) and it was suggested to add a 1000 uF capacitor onto the line to handle any peak currents. Should I measure the batterys output to the mainboard while the unit is in use? I don't have my multimeter on me just now but will update the post with readings once I get it.
 

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