---
product_id: 662758810
title: "BSIDE Programmable DC Power Supply 40V 20A Bench Power Supply Small Variable Lab Power Supply Adjustable Switching Regulated Wide Range Power Supply with Button and Knob Adjustment, Memory Function"
brand: "maxrieny"
price: "AR$585585"
currency: ARS
in_stock: true
reviews_count: 3
category: "Maxrieny"
url: https://www.desertcart.com.ar/products/662758810-bside-programmable-dc-power-supply-40v-20a-bench-power-supply
store_origin: AR
region: Argentina
---

# 20A max current capacity 3 memory preset slots 40V max voltage output BSIDE Programmable DC Power Supply 40V 20A Bench Power Supply Small Variable Lab Power Supply Adjustable Switching Regulated Wide Range Power Supply with Button and Knob Adjustment, Memory Function

**Brand:** maxrieny
**Price:** AR$585585
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Your Lab Like a Pro — Precision, Memory & Safety in One Compact Unit!

## Quick Answers

- **What is this?** BSIDE Programmable DC Power Supply 40V 20A Bench Power Supply Small Variable Lab Power Supply Adjustable Switching Regulated Wide Range Power Supply with Button and Knob Adjustment, Memory Function by maxrieny
- **How much does it cost?** AR$585585 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/662758810-bside-programmable-dc-power-supply-40v-20a-bench-power-supply)

## Best For

- maxrieny enthusiasts

## Why This Product

- Trusted maxrieny brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust Safety Suite:** Built-in OVP, OCP, OTP, and overload protections ensure your projects and devices stay safe under all conditions.
- • **Smart Memory Storage:** Save and recall 3 custom voltage/current presets instantly for seamless workflow continuity.
- • **Powerful & Versatile Output:** Delivers up to 40V and 20A, replacing multiple power supplies with scalable, energy-efficient performance.
- • **Precision at Your Fingertips:** Dual adjustment modes with high-precision knob and directional keys for ultra-fine voltage and current control.
- • **Intuitive Multi-Display TFT Screen:** 360° view, 4-digit high-precision display showing voltage, current, power, and protection status at a glance.

## Overview

The BSIDE Programmable DC Power Supply offers a wide 0-40V and 0-20A output range with ultra-precise dual adjustment controls and a vivid TFT display. Featuring 3 memory presets, USB-B connectivity for PC control, and comprehensive safety protections, it’s a compact, versatile bench power supply designed for professional engineers and makers who demand accuracy, efficiency, and reliability.

## Description

Features: Programmable with USB-B port, connected to a computer for remote or automated control. Supports USB, RS232, and RS485 interfaces. Please contact us if needed. Wide range voltage Adjustable and output stable DC power supply with two adjustment methods: high-precision knob and directional key. 3 sets of quick parameter storage keys: can preset the voltage and current values when the output is turned off, and can quickly call up the pre stored values of 1/2/3, making it convenient and flexible. It has four protection functions: overvoltage protection (OVP), overcurrent protection (OCP), over temperature protection (OTP), and overload protection (OPP). Front 5V2AUSB charging interface. One click output on/off, one click voltage and current stabilizing switch, automatic locking menu key to prevent incorrect operation. TFT color screen LCD 4-bit display, 360 ° full view view. The panel can simultaneously display the output status, output current, voltage, power, and display time, as well as the switch status of overvoltage protection (OVP)/overcurrent protection (OCP). Can support global voltage adjustment: 110V/220V. Specifications: Output voltage: 0-40V, output current: 0-20A Resolution: 10mV (≤ 0.1%+5 digits); 10mA(≤0.1%+10digits ) Ripple: ≤ 12mVrms, ≤ 18mArms Load/power regulation rate: ≤ 0.2% Vmax+5mV Working voltage: AC220V ± 10% 50Hz or AC110V ± 10% 60Hz Max voltage: 40.5V Max current: 20.1A OVP: 0-41V OCP: 0-20.5A output power: 0-300W Size: 230 * 80 * 150mm Weight: 1.68kg Packaging content: DC output power supply power cord Instruction manual Test line USB connection cable

Review: Handles the power - I needed a hint that could put out 20 Amps. This fit the bill and tested for several hours at that output.
Review: Cant see low amperage consumption - If connected device consumes less than 0.3amp, this thing will not show it. Not good but not the end of the day. Controls are somewhat intuitive but not easy either. Entire device is compact and well built but it should really be larger and with more presets

## Features

- Programmable: Variable DC power supply with USB-B connection port on the back for fast and accurate voltage/current adjustments, setting multiple memory values, exporting data tables/graphs via PC; with hardware list, with programmable sequence outputs and more.
- Wide Range Power Supply: This programmable power supply can output up to 40V voltage 20A current, compared with other 300W power supplies, it has a wider output range, which is multi-purpose, energy-saving, scalable and wide range. It perfectly replaces various specifications in the market, for example, it can output 30V5A, 30V10A, 15V20A and so on. You can dynamically adjust the voltage and current according to your needs.
- TFT screen with Multi-function display: Full viewing angle, high precision 4-digit display for voltage (output voltage set value and actual output value), current (output current set value and actual output value), actual output power, totalized execution time, channel output status, OCP/OVP switching status. The data is very intuitive and easy to understand.
- Precision encoder knob and direction key: Unlike other DC power supplies this adjustable power supply can be adjusted using two ways: high precision knob and direction key, which can meet different usage habits, support coarse and fine adjustment, and can set the required voltage or current more precisely. Make your work more flexible and efficient.
- Memory storage, key: Bench DC power supply with 3 sets of data storage buttons, 1, 2, 3, you can set the commonly used data for storage as a shortcut parameter, and then turn on the DC power supply can be used again with one key, very convenient. With menu button, with up and down buttons can set U/I shortcut parameters.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DFYGFDMJ |
| Best Sellers Rank | #397,801 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #507 in Lab Power Supplies #838 in Life Science Supplies |
| Customer Reviews | 4.1 4.1 out of 5 stars (5) |
| Date First Available | September 3, 2024 |
| Item Weight | 3.7 pounds |
| Item model number | I8 DC power supply 40V20A |
| Manufacturer | BSIDE |
| Product Dimensions | 9.06 x 3.15 x 5.91 inches |

## Product Details

- **Brand:** MAXRIENY
- **Compatible Devices:** Personal Computer
- **Connector Type:** usb
- **Cooling Method:** Air
- **Form Factor:** Bench
- **Item Weight:** 1.68 Kilograms
- **Item dimensions L x W x H:** 9.06 x 3.15 x 5.91 inches
- **Model Name:** I8 DC power supply 40V20A
- **Output Wattage:** 300 Watts
- **Wattage:** 300 watts

## Images

![BSIDE Programmable DC Power Supply 40V 20A Bench Power Supply Small Variable Lab Power Supply Adjustable Switching Regulated Wide Range Power Supply with Button and Knob Adjustment, Memory Function - Image 1](https://m.media-amazon.com/images/I/61I6Hwfk53L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Handles the power
*by A***R on January 28, 2026*

I needed a hint that could put out 20 Amps. This fit the bill and tested for several hours at that output.

### ⭐⭐⭐⭐ Cant see low amperage consumption
*by T***H on June 27, 2025*

If connected device consumes less than 0.3amp, this thing will not show it. Not good but not the end of the day. Controls are somewhat intuitive but not easy either. Entire device is compact and well built but it should really be larger and with more presets

### ⭐ UNRELIABLE SECOND FAILURE
*by R***N on September 4, 2025*

Horrible quality! On 3/25/25 I purchased one of the I84020's. We use it to charge and balance security camera batteries. One morning I came into the shop to a dead display? Turns out the fuse was blown, no problem, I will just replace it. The split second I plugged it in I heard the fuse pop? It had been charging a 7Ah lead acid battery at 14.4V and .7A. I tried to contact BSide and they were unresponsive. I then contacted Amazon and they sent a replacement on 4/25/25. Yesterday, I was charging a pair of 7Ah batteries in parallel at 1.4A & 14.4V I left the shop for 20 minutes and came back to a dead display, again. I pulled the fuse and it was again blown. Due to the last debacle I now had spares. Same exact failure as last time, replace fuse plug into wall POP! On top of all this the the software has never worked! Save your money ,this company does not respond and the quality of this power supply is abysmal... I now have ten+ emails to BSide with ZERO help....

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-30*