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Reviews (9)
May 30, 2017
As expected
Needed if you replace a 7mm laptop drive with a 9.5mm laptop drive in a Thinkpad T530.
Mar 15, 2019
Works fine but not 2500 watts. Not for heating up bath tub.
4 of 4 found this helpful It works fine. However it is definitely not 2500 watts. At 220V it's about 1000 watts. At 120V it's about 300 watts.
It draws about 4.5A at 220V, about 2.5A at 120V. For those that are interested, the resistance of the nichrome wire is about 49 ohms.
220V/49Ω=4.5A
4.5A*220V=988W
120V/49Ω=2.4A
2.4A*120V=294W
Note that it has an Australian plug so for use outside Australia you'll need a plug adapter or you'll need to cut off the AU plug and attach a different plug.
It works fine at U.S. voltage (120V). Inside of immersion heaters is a nichrome wire that heats up when you put any voltage on it. It just takes a lot longer to heat water at the lower voltage and current. However don't use a 120V immersion heater on 220V.
Remember never to plug this in unless it's immersed in water--the nichrome wire will burn up in just a few seconds if the unit is operated out of water.
Also, you'd be hard pressed to heat up a bath tub full of water with this device, it's for heating a couple of liters of water at the most.
Jun 23, 2017
Two Pin current connector doesn't Fit Without Modifying Board
The connector for current measurement (the 2 pin connector) can't go on the board because the current shunt (rectangular metal bar) is soldered in at an angle so it blocks the latch of the connector.
You have to use a high-wattage soldering iron to heat the two connections and make the bar stand straight up so the connector has clearance (it will barely clear when the bar is straight up).
First photo shows how the connector plugs in after board is modified to straighten current shunt, Second photo shows how the current shunt blocks the latch on the connector.