--- product_id: 501982085 title: "Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V" brand: "makerhawk" price: "€ 29.16" currency: EUR in_stock: false reviews_count: 6 url: https://www.desertcart.at/products/501982085-adjustable-constant-current-electronic-load-150w-usb-electronic-load-battery store_origin: AT region: Austria --- # 150W Power 0.2-25A Range Safety Features Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V **Brand:** makerhawk **Price:** € 29.16 **Availability:** ❌ Out of Stock ## Summary > 🔧 Power Meets Precision: Elevate Your Testing Game! ## Quick Answers - **What is this?** Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V by makerhawk - **How much does it cost?** € 29.16 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/501982085-adjustable-constant-current-electronic-load-150w-usb-electronic-load-battery) ## Best For - makerhawk enthusiasts ## Why This Product - Trusted makerhawk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Equipped with over-power, high temperature, and reverse connection protection. - • **Precision Redefined:** Experience ultra-high precision with patented soft calibration technology. - • **User-Friendly Software:** Easily connect and configure settings through online software for seamless operation. - • **Versatile Power Supply:** Supports both DC and Micro USB power supply modes for ultimate flexibility. - • **Innovative Discharge Design:** Four-tube discharge technology ensures stable operation even under high current. ## Overview The Adjustable Constant Current Electronic Load is a cutting-edge 150W USB electronic load and battery capacity tester, designed for professionals seeking precision and safety in their measurements. With a current range of 0.2-25A and voltage measurement capabilities from 2V to 200V, this device features advanced calibration technology, multiple power supply options, and robust safety mechanisms, making it an essential tool for any serious technician or engineer. ## Description Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V: desertcart.com: Tools & Home Improvement Review: New (purple) Version - Solid Battery Capacity Tester - I'm in the process of building a 100Ah LiFePO4 battery pack for the 48v Torqeedo outboard motor that I have on my pontoon boat (I live on an e-motor only lake). I first discovered this device being used as a battery capacity tester in one of Will Prowse's YouTube videos. It looked like an affordable / easy option for confirming that the batteries I bought did, in fact, have the advertised 100Ah . . . so I clicked on his link to the desertcart store. When I got here, I saw the newer version available and went for it! Note again: this review is for the "New upgrade" purple version. A few comments: 1) The device is working great! I attached a picture of the 6th consecutive cell that I am running through capacity testing. A little smoke rolled off the device when I started discharging the first battery, but stopped within a few seconds. The resistors on the sides of the heat sink get pretty hot when discharging at the 20A I'm using for this cell (0.2C discharge rate), so I expect it was some residual solder flux burning off. In any case, it didn't affect operation in any way that I can see and it hasn't repeated since the first run. 2) The separate discharge and voltage measurement terminals are a must! The discharge terminals measure ~0.4 volts less than the voltage measurement ones due to resistance in my leads (likely the fuse - your results may vary), which would significantly affect measurements. It's a must-have feature, in my opinion, and the older version (the one Will used) doesn't have it. 3) There is a PC app that you can download from a janky-looking website (accessed via the QR code on the back of the device) so you can monitor / control the device from your PC. I'm not trusting enough to install something like that on my PC so I can't comment on it, but the pictures looked pretty cool! 4) No instructions were included with the device. However, the QR code on the back of the device brings up a site (the one referenced above) where you can download them. Unfortunately, there are several downloads there and no indication of which is the correct one (use DL150B). Worse, they are written in VERY poor English and are incomplete! For example, if you want to erase the data from a previous run, you need to press the button and encoder down at the same time until "Data Erase" shows up. Hold them for a moment longer and it factory resets. Neither function is indicated in the instructions. Nor is any information on how to use this kind of device. If you don't know how to use it, don't buy it until you spend some time on YouTube watching people use similar models (I couldn't find any videos with this version). You're likely to hurt yourself or someone you love!!! In summary, great little device if you're tech savvy and one of those people who only resort to instructions as a last resort. You will definitely leverage those "figure it out on my own" skills here! If your using the instructions as your sole method of understanding the device, good luck! Looking at a lot of the bad reviews, I'm guessing a lot of those folks were in this category. I'm on cell #6 now, but will update my review if anything changes before I get through cell #20! Peace! Review: Used - Like New unit was dead on arrival - Tried to save some money by ordering this used load tester, but it was dead on arrival. All the lights and readouts worked fine, but when you try to dial in the load, it will not move beyond 0.01A. Either the board is defective or someone previously damaged the unit. Wrote a note to reseller to see if there is any troubleshooting I can do before return, but I doubt it. I would be perfectly happy with a used working load tester, but I don't think there is any QA testing on these returned units. Still want a working unit, so if I cannot get a used working load tester, I may go ahead and buy a new unit. Will update review as appropriate. UPDATE: Seller responded to my inquiry, but days after the unit had already been returned and refunded. My suggestion, if you ordered a new or used unit, is to thoroughly check out this device when you get it and make sure the load tester actually works. My used unit looked like brand new, but it was either defective or blown from previous user. desertcart required me to send back the defective unit, but I hope they don't try to sell it someone else again. Lost a week or more on this transaction and still don't have a working load tester yet. ## Features - New upgrade: The electronic load is connected to the USB interface of the computer, and then the online software driver of the upper computer is installed, and the software can be used online after opening the software. Online background settings are synchronized with load host settings - Ultra-high precision: The precision is strictly calibrated by the engineers at the factory, and the patented soft calibration technology is adopted. The software learning precision is carried out through the large instrument, and the small error caused by the hardware is repaired through the software, so that the measurement precision can reach the same level. Exactly the same precision for larger instruments - Safe to use: You can set the timing discharge and stop voltage, with over-power protection and high temperature protection, battery temperature measurement and protection, with fuse and reverse connection protection functions - Two power supply modes: 1. DC6-12V DC5.0 power supply; 2. DC6-12V Micro USB power supply. The discharge power of the fuselage cannot exceed 150W, otherwise there is a danger of burning out. Voltage measurement range: 2V ~ 200V, current measurement range: 0.2A ~ 25A - Four-tube discharge design: The heavy-cost multi-tube current is evenly shunted and synchronous discharge technology is adopted, so that a larger current can be used for long-term stable operation at low voltage and high current, and the anti-burning safety of the discharge tube during high-voltage discharge has been breakthrough at the same time. The improvement of the performance makes the overall technical index performance of the equipment reach a higher leap ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BK8YB2F4 | | Best Sellers Rank | #741,099 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,202 in Multi Testers | | Brand Name | MakerHawk | | Color | Purple | | Customer Reviews | 3.7 3.7 out of 5 stars (304) | | Included Components | Adjustable Constant Current Electronic Load | | Item Dimensions | 6.42 x 4.33 x 2.36 inches | | Manufacturer | MakerHawk | | Measurement Type | Multimeter, Voltmeter | | Minimum Operating Voltage | 2 Volts | | Model | DL150B | | Power Source | Battery Powered | | Specification Met | UL | ## Product Details - **Brand:** MakerHawk - **Color:** Purple - **Item dimensions L x W x H:** 6.42 x 4.33 x 2.36 inches - **Min. Operating Voltage:** 2 Volts - **Power Source:** Battery Powered ## Images ![Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V - Image 1](https://m.media-amazon.com/images/I/81YtTD-zOOL.jpg) ![Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V - Image 2](https://m.media-amazon.com/images/I/819cLEzMmPL.jpg) ![Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V - Image 3](https://m.media-amazon.com/images/I/71auBH7N5nL.jpg) ![Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V - Image 4](https://m.media-amazon.com/images/I/81dN9VRsOOL.jpg) ![Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V - Image 5](https://m.media-amazon.com/images/I/81GC3Lu-aJL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ New (purple) Version - Solid Battery Capacity Tester *by D***Z on June 30, 2023* I'm in the process of building a 100Ah LiFePO4 battery pack for the 48v Torqeedo outboard motor that I have on my pontoon boat (I live on an e-motor only lake). I first discovered this device being used as a battery capacity tester in one of Will Prowse's YouTube videos. It looked like an affordable / easy option for confirming that the batteries I bought did, in fact, have the advertised 100Ah . . . so I clicked on his link to the Amazon store. When I got here, I saw the newer version available and went for it! Note again: this review is for the "New upgrade" purple version. A few comments: 1) The device is working great! I attached a picture of the 6th consecutive cell that I am running through capacity testing. A little smoke rolled off the device when I started discharging the first battery, but stopped within a few seconds. The resistors on the sides of the heat sink get pretty hot when discharging at the 20A I'm using for this cell (0.2C discharge rate), so I expect it was some residual solder flux burning off. In any case, it didn't affect operation in any way that I can see and it hasn't repeated since the first run. 2) The separate discharge and voltage measurement terminals are a must! The discharge terminals measure ~0.4 volts less than the voltage measurement ones due to resistance in my leads (likely the fuse - your results may vary), which would significantly affect measurements. It's a must-have feature, in my opinion, and the older version (the one Will used) doesn't have it. 3) There is a PC app that you can download from a janky-looking website (accessed via the QR code on the back of the device) so you can monitor / control the device from your PC. I'm not trusting enough to install something like that on my PC so I can't comment on it, but the pictures looked pretty cool! 4) No instructions were included with the device. However, the QR code on the back of the device brings up a site (the one referenced above) where you can download them. Unfortunately, there are several downloads there and no indication of which is the correct one (use DL150B). Worse, they are written in VERY poor English and are incomplete! For example, if you want to erase the data from a previous run, you need to press the button and encoder down at the same time until "Data Erase" shows up. Hold them for a moment longer and it factory resets. Neither function is indicated in the instructions. Nor is any information on how to use this kind of device. If you don't know how to use it, don't buy it until you spend some time on YouTube watching people use similar models (I couldn't find any videos with this version). You're likely to hurt yourself or someone you love!!! In summary, great little device if you're tech savvy and one of those people who only resort to instructions as a last resort. You will definitely leverage those "figure it out on my own" skills here! If your using the instructions as your sole method of understanding the device, good luck! Looking at a lot of the bad reviews, I'm guessing a lot of those folks were in this category. I'm on cell #6 now, but will update my review if anything changes before I get through cell #20! Peace! ### ⭐ Used - Like New unit was dead on arrival *by G***S on July 2, 2022* Tried to save some money by ordering this used load tester, but it was dead on arrival. All the lights and readouts worked fine, but when you try to dial in the load, it will not move beyond 0.01A. Either the board is defective or someone previously damaged the unit. Wrote a note to reseller to see if there is any troubleshooting I can do before return, but I doubt it. I would be perfectly happy with a used working load tester, but I don't think there is any QA testing on these returned units. Still want a working unit, so if I cannot get a used working load tester, I may go ahead and buy a new unit. Will update review as appropriate. UPDATE: Seller responded to my inquiry, but days after the unit had already been returned and refunded. My suggestion, if you ordered a new or used unit, is to thoroughly check out this device when you get it and make sure the load tester actually works. My used unit looked like brand new, but it was either defective or blown from previous user. Amazon required me to send back the defective unit, but I hope they don't try to sell it someone else again. Lost a week or more on this transaction and still don't have a working load tester yet. ### ⭐⭐⭐⭐⭐ Very accurate and great for load testing high capacity batteries *by M***. on February 22, 2022* This is a great value for the money and is a chinese load tester. This is NOT a lab quality electronic device and has some flaws in design and in materials, however for what it does and it's price point, it's very useful. Pro's: Can load test high current/high capacity devices up to 150W. Can handle up to 185W for short periods but will overheat for longer tests at this load. Is accurate enough for DIY or general purpose testing. I verified the current readings aligned well with a hall effect clamp style meter. However clamp style meters aren't super accurate either. It also aligned well with a battery monitor/current shunt. Can automatically count amp-hours, watt-hours, test time and will shut down once a final (configurable) voltage is reached. Will automatically ramp up fan speed to cool the heatsink and mosfet based on current flow. Capable of dissipating heat for long continuous load tests such as when testing Lithium batteries. Con's: The terminals are small for the heavier load levels and make it hard to connect large enough cables to remove voltage drop. I used 10 AWG cables which worked ok, but there was a small voltage drop. The current and voltage displays cannot be calibrated and any offsets are permanent. My voltage was off by 0.3V. Can run automatically but I would highly recommend monitoring this device constantly and not leaving it unattended. ## Frequently Bought Together - Adjustable Constant Current Electronic Load - 150W USB Electronic Load Battery Capacity Tester USB Resistor Load Multimeter Voltage Current Tester Voltmeter Meter Amperage Reader 0.2-25A 2-200V - MakerHawk USB Multimeter USB Voltmeter Ammeter Load Tester USB Voltage Current PD Battery Power Capacity Charger Type C Meter Tester LCD Display Cable Resistance QC2.0/3.0/4.0 N10 1.44 Inch Screen - Treedix USB Cable Tester Board USB Cable Checker Data Wire with Acrylic Case Charging Test Data Line Type-C Micro Type A Type B --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/501982085-adjustable-constant-current-electronic-load-150w-usb-electronic-load-battery](https://www.desertcart.at/products/501982085-adjustable-constant-current-electronic-load-150w-usb-electronic-load-battery) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-22*