I have two of these. Yes the manual is a little difficult, but how well will you write a manual in a different language? The units are small and a challenge to configure, but once done, you will like it. I purchased the first one a few years ago and it has not failed yet. It was used to monitor the in/out voltages and amps from a cheap Harbor Freight charge controller. Since then, I have purchased another one to use with another solar project. I have also used it in connection with my large array, though not needed, it was more blinky lights.
The relay trigger that is built into this has not been used yet. I may use it in the future with and Arduino solar project I am working on.
The input voltage should be calibrated to match your digital voltmeter. I suggest clipping them both to the same source simultaneously to achieve this.
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This item: DROK Charge-Discharge Monitor, 0-90V 100A DC Ammeter Voltmeter, Battery Capacity Amp-Hour Watt-Hour Power Time Multimeter, LCD Display Digital Voltage Current AH WH Watt Meter Tester with Hall Se
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Product Description
Measuring Range
Current measuring range: DC 0-100A
Display resolution: 0.1A, 0.01V, 0.01AH, 0.01H (1 min)
Voltage measure range: No extra power supply DC 12-90V; With an extra power supply DC 0-90V
Design Details
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ButtonsIf the relay (this product doesn't contain a relay) is connected, press the button ↑ ↓ to move the yellow cursor to OUT after powering on, and press OK to control the output. If the OUT light turns green, the output will be turned on; if the OUT light is gray, the output will be turned off. And the power state of the machine will be the state before the last shutdown. If the relay is not used, the output is always on and the OUT light won't work. |
Protection function menuProtection Function Menu: OVP (Over-voltage protection): 0.01V-90V; OCP (Over-current protection): 0.1-100A; OPP (Over-power protection): 0.01W-9.99KW; LOP (Low-voltage protection): 0.01V-90V; OAH (Over-charge protection): 0.01AH-9999AH; OFT (Over-time protection): 1min-99hour59min. For details on how to set each protection, please check User Manual [PDF ] from Product guides and documents on this page. |
Hall SensorPass the current wire through the round hole of the hall sensor, then the current will be detected. The current can be detected in both positive and negative directions. NOTE: Check the jumper connection, which needs to be connected on J4 when no external power supply for the hall sensor, while on J3 with an external power supply added to the hall sensor. |
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| DC 7-in-1 Meter | DC 5-in-1 Meter | DC 4-in-1 Meter | DC 2-in-1 Meter | DC 7-in-1 Meter with a 2m Wire | |
| Customer Reviews |
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| Price | $29.61 | $39.99 | $22.99 | $15.49 | $30.55 |
| Measuring Parameter | Voltage, current, power, battery capacity, amp-hour, watt-hour, time | Voltage, Current, Power, Energy, Battery Capacity | Voltage, Current, Power, Energy | Voltage, Current | Voltage, current, power, battery capacity, amp-hour, watt-hour, time |
| Voltage Range | DC 0-90V | DC 0-300V | DC 6.5-100V | DC 4.5-100V | DC 0-90V |
| Current Range | 100A | 200A | 100A | 50A | 100A |
| Display | LCD Display | STN LCD Display | LCD Display | LED Display | LCD Display |
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DROK 0 to 90V 100A Charge Discharge Monitor 200219
DROK
Very Accurate and Great Value - Great Customer Service!
Easy to install and accurate. Just connect it to always-on power with jumper on J4 so it can monitor both discharging and discharging. We installed one of these on a 36V EZ-GO golf cart we converted to lithium, as well as a 48V Ryobi 54" zero-turn mower we converted to lithium. I 3D printed a bezel for each of these custom installation so the meter would snap right into place.Excellent customer service! I had a problem with the second unit, but customer service responded immediately, and had a replacement unit on my doorstep the same day I dropped off the defective unit to the UPS location to be shipped back.
Top reviews from the United States
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Reviewed in the United States on July 4, 2023
Size: 0-90V 300AVerified Purchase
The first unit I received did not work, but the vendor was quick to replace it and the second is working perfactly. I will update this post if anything changes. I am building a solar generator and added a second battery monitor with different information on it. Still have a little more to do, but it works good so far.
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