--- product_id: 461285253 title: "Keeper1220" brand: "powmr" price: "€ 77.22" currency: EUR in_stock: true reviews_count: 11 category: "Pow Mr" url: https://www.desertcart.pt/products/461285253-keeper1220 store_origin: PT region: Portugal --- # 20A max charging current 99.5% MPPT tracking efficiency Supports 12V & 24V battery systems Keeper1220 **Brand:** powmr **Price:** € 77.22 **Availability:** ✅ In Stock ## Summary > 🔆 Empower your solar setup with Keeper1220 — where smart meets sustainable. ## Quick Answers - **What is this?** Keeper1220 by powmr - **How much does it cost?** € 77.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/461285253-keeper1220) ## Best For - powmr enthusiasts ## Why This Product - Trusted powmr brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision MPPT Tech:** Harness up to 99.5% solar power efficiency—maximize every ray. - • **Real-Time LCD Monitoring:** Stay informed with instant updates on charging current, battery voltage, temperature, and error alerts. - • **Dynamic Load Control Modes:** Choose from 24H, Light, or Light+Time control to tailor your power usage. - • **Smart Dual Voltage Auto-Detect:** Seamlessly switches between 12V and 24V systems for ultimate flexibility. - • **Versatile Battery Compatibility:** Works flawlessly with Flooded, AGM, GEL, LiFePO4, and more—customize your energy storage. ## Overview The Keeper1220 is a robust 20A MPPT solar charge controller designed for 12V and 24V battery systems. It features advanced maximum power point tracking technology with over 99.5% efficiency, supports multiple battery chemistries including Lithium and AGM, and offers versatile load control modes. Its clear LCD display provides real-time system diagnostics, making it an essential upgrade for efficient, reliable solar energy management. ## Description desertcart.com: PowMr 12V 24V AUTO 20Amp Solar Charge Controller, MPPT Charge Controller Intelligent Regulator w/LCD Display for AGM, Gel, Flooded and Lithium Battery Charging : Patio, Lawn & Garden Review: Works Great, but Watch the Watts Rating - I'm happy with the way this 20 amp solar charge controller works, but should have paid more attention to the power rating shown in the desertcart ad. The current and voltage rating seem to indicate it could handle all four of my 100 watt, 5 amp, Renogy solar panels. It's rated higher if charging 24 volts of battery, but my inverter is for 12 volts, so I can't just put the batteries in series. I can get by using the PWM charge controller built into my 2200 watt Giandel inverter for two of the solar panels, but wish I'd paid a little more for a more capable controller. In fact, if I ever upgrade I'll probably get the old style 60 watt PowMr controller. A YouTube video mentions that their new version has a connection for a fan on its motherboard, but no fan. The old version, with a metal housing, has a fan. Edit: Note, when comparing solar controllers, be aware that the amp rating is for amps OUT. My mistake was thinking it was amps IN from the solar panels. Even in parallel, my four 100 watt panels should produce just 20 amps INTO the charge controller, but the voltage IN is greater than the voltage OUT, so it overheated and shut down (luckily it works again, after cooling off). Note: to find the amp rating you need, for this or other charge controllers, just divide the total watts of your solar panels (400 in my case) by the nominal battery voltage (12 in my case) to get the rated amps you need (33.3 in my case). Edit 2: At a later date, the price of my 20 amp controller went up so high that the 30 amp model was significantly less, so compare prices before ordering. Wish I had that 30 amp model. Edit 3: I have now purchased two more 100 watt solar panels, plus the 60 watt controller I mention above, and couldn't be happier. Review: Terrible manual. High electromagnetic emissions. - I'm evaluating this "Keeper1220" MPPT charge controller to see if it will work for my application. I ordered it on June 13, 2023. It arrived in a reasonable time. I get what might be an error message: "E-12" when the "BAT" label activates. The manual is terrible - unclear, uses English words but neither English sentence structure nor grammar. And, the manual does not contain a list of error codes. I set the "Float Voltage" to 14.3V because I'm charging a LiFePO4 battery. There's something on the back page about setting U611 for "LiFePO4 12.8V" but it's not clear what this does or how to do it. On bootup, the display shows "U1.6". This might be the firmware version. The unit did charge the battery at about 6A for a little while while drawing about 2A from the PV panel, but the PV panel's MPP is at a lower voltage and higher current than this. desertcart's "Get Product Support" function leads to a "404 Not Found" error when I click on the link for the manufacturer's support website. But I found the manufacturer's website another way and started a chat session. The other party (maybe just a computer) said it couldn't answer my question but would reply later to my email, which I gave it. Additional notes: After a few days, and referencing this review, the seller replied with an offer of a refund but no answers to my questions. They also asked for pictures and "more details" without specifying what additional information such photos or details might provide, and asking no technical questions. I replied, accepting the refund offer and questioning whether the seller has any relationship or communication with the engineers who designed the product. The next day, they replied that E-12 means that the battery voltage is too high, and sent me an "updated" user manual that lists more settings and briefly describes error codes 1,2,3,5,6, and 7. Today (July 8), error code E-11 appeared. Another mystery. I also found out today that this controller emits enough radio frequency interference (RFI) to obliterate most signals I was listening to on the 15 meter band on my ham radio nearby. It added more noise to the already-noisy 40 meter band, too, but not enough to make that band completely unusable. As this product has the CE logo on its label, this should not occur. I have requested a copy of the product's compliance certificate for the Low Voltage Directive and the Electromagnetic Compatibility Directive, but am concerned that they might not exist. If I keep this unit, I'll have to add chokes and build it into a metal enclosure to contain the radio frequency (RF) noise that would probably be absent if the product complied with the CE EMC directive. On the positive side, it might be working. Upon connecting the well-illuminated PV panel and a partially discharged battery, the unit moved the voltage around and eventually settled on a voltage. DC wattmeters on both the input and output indicated reasonable amounts of power in and out and output current that agreed with the controller's displayed output current. With the PV operating at a little more than 3 times the battery voltage, the output current was almost three times the input current, as it should be. As of July 18, the refund offered (and accepted) on June 29 has not arrived. ## Features - 【20A Solar Charge Controller】Auto detect 12V 24V system; Rated Charging Current is 20A; Max. PV Open Circuit Voltage is 60V; Advanced MPPT maximum power point tracking technology solar charge controller, tracking efficiency is no less than 99.5%. - 【Supported Voltage/Power Ranges】20A Solar Controller can accept solar voltage up to 60V. When the battery is a 12V system, the recommended maximum input power is 260W; For 24V system, the Max. is 520W. - 【Compatible Battery Types】Compatible with 12v 24V battery systems, Adaptable to User, Flooded, AGM, GEL, LifePO4, Lithium, and other customized battery types. Important: Please connect the battery first.. - 【Multiple load control modes】Solar controller 20amp with Excellent heat sink design and Multiple load control modes: 24Hours Working, Light Control, Light+Time Control. - 【LCD Display】Comes with an LCD display showing accurate and timely information including charging current, generated energy, temperature, battery voltage, and error codes that allows users to monitor and control charging. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B5WP1BY8 | | Best Sellers Rank | #124,483 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #121 in Renewable Energy Controllers | | Brand | PowMr | | Brand Name | PowMr | | Color | MPPT 20amp/12v 24v | | Customer Reviews | 3.7 out of 5 stars 52 Reviews | | Display Type | LCD | | Included Components | no | | Item Weight | 0.67 kg | | Manufacturer | PowMr | | Material | Metal | | Material Type | Metal | | Model | Keeper1220 | | Number of Items | 1 | | Operating Temperature | 55 °C | | Part Number | POWKeeper1220 | | Voltage | 24 volts | ## Product Details - **Brand:** PowMr - **Color:** MPPT 20amp/12v 24v - **Item Weight:** 0.67 kg - **Material:** Metal - **Voltage:** 24 volts ## Images ![Keeper1220 - Image 1](https://m.media-amazon.com/images/I/51koInJgUvL.jpg) ![Keeper1220 - Image 2](https://m.media-amazon.com/images/I/61jpHEah-jL.jpg) ![Keeper1220 - Image 3](https://m.media-amazon.com/images/I/61tcYlq6F7L.jpg) ![Keeper1220 - Image 4](https://m.media-amazon.com/images/I/61N8qgoTdjL.jpg) ![Keeper1220 - Image 5](https://m.media-amazon.com/images/I/71C7KX7Y6JL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Want to adjust float voltage. Manual says I select that screen and then press select for 5 secs and should start blinking. But it doesn't.** A: Here is how to adjust your Float voltage, Step 1: press setting button to Browse your controller's parameter till you see 13.7V and your battery icon. Step 2: When the LCD shows 13.7V, long press the setting button until the 13.7V Flashing. Step 3: When the 13.7V Flashing, press plus or minus to adjust your parameter. Step 4: After adjust to your own parameter, let go the button just let is flashing, after 2-5 second it will stop flashing. Step 5: Press setting button to Browse your controller's parameter again, see if the parameter successful modify. **Q: What happens if i put a 12v (18vmax) panel on a 24v battery?** A: it won't charge. This controller only charge when you solar panel voltage higher than battery. **Q: Does this controller steps up voltage if I have 3 12v solar panel wanting to charge a 48v battery?** A: NO. Solar panel voltage must higher than battery voltage, 3 12V solar panel, max only 36V, it can't charge 48V batttery. **Q: Is this Negative ground?** A: NO. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Great, but Watch the Watts Rating *by D***E on March 5, 2023* I'm happy with the way this 20 amp solar charge controller works, but should have paid more attention to the power rating shown in the Amazon ad. The current and voltage rating seem to indicate it could handle all four of my 100 watt, 5 amp, Renogy solar panels. It's rated higher if charging 24 volts of battery, but my inverter is for 12 volts, so I can't just put the batteries in series. I can get by using the PWM charge controller built into my 2200 watt Giandel inverter for two of the solar panels, but wish I'd paid a little more for a more capable controller. In fact, if I ever upgrade I'll probably get the old style 60 watt PowMr controller. A YouTube video mentions that their new version has a connection for a fan on its motherboard, but no fan. The old version, with a metal housing, has a fan. Edit: Note, when comparing solar controllers, be aware that the amp rating is for amps OUT. My mistake was thinking it was amps IN from the solar panels. Even in parallel, my four 100 watt panels should produce just 20 amps INTO the charge controller, but the voltage IN is greater than the voltage OUT, so it overheated and shut down (luckily it works again, after cooling off). Note: to find the amp rating you need, for this or other charge controllers, just divide the total watts of your solar panels (400 in my case) by the nominal battery voltage (12 in my case) to get the rated amps you need (33.3 in my case). Edit 2: At a later date, the price of my 20 amp controller went up so high that the 30 amp model was significantly less, so compare prices before ordering. Wish I had that 30 amp model. Edit 3: I have now purchased two more 100 watt solar panels, plus the 60 watt controller I mention above, and couldn't be happier. ### ⭐⭐⭐ Terrible manual. High electromagnetic emissions. *by H***. on June 27, 2023* I'm evaluating this "Keeper1220" MPPT charge controller to see if it will work for my application. I ordered it on June 13, 2023. It arrived in a reasonable time. I get what might be an error message: "E-12" when the "BAT" label activates. The manual is terrible - unclear, uses English words but neither English sentence structure nor grammar. And, the manual does not contain a list of error codes. I set the "Float Voltage" to 14.3V because I'm charging a LiFePO4 battery. There's something on the back page about setting U611 for "LiFePO4 12.8V" but it's not clear what this does or how to do it. On bootup, the display shows "U1.6". This might be the firmware version. The unit did charge the battery at about 6A for a little while while drawing about 2A from the PV panel, but the PV panel's MPP is at a lower voltage and higher current than this. Amazon's "Get Product Support" function leads to a "404 Not Found" error when I click on the link for the manufacturer's support website. But I found the manufacturer's website another way and started a chat session. The other party (maybe just a computer) said it couldn't answer my question but would reply later to my email, which I gave it. Additional notes: After a few days, and referencing this review, the seller replied with an offer of a refund but no answers to my questions. They also asked for pictures and "more details" without specifying what additional information such photos or details might provide, and asking no technical questions. I replied, accepting the refund offer and questioning whether the seller has any relationship or communication with the engineers who designed the product. The next day, they replied that E-12 means that the battery voltage is too high, and sent me an "updated" user manual that lists more settings and briefly describes error codes 1,2,3,5,6, and 7. Today (July 8), error code E-11 appeared. Another mystery. I also found out today that this controller emits enough radio frequency interference (RFI) to obliterate most signals I was listening to on the 15 meter band on my ham radio nearby. It added more noise to the already-noisy 40 meter band, too, but not enough to make that band completely unusable. As this product has the CE logo on its label, this should not occur. I have requested a copy of the product's compliance certificate for the Low Voltage Directive and the Electromagnetic Compatibility Directive, but am concerned that they might not exist. If I keep this unit, I'll have to add chokes and build it into a metal enclosure to contain the radio frequency (RF) noise that would probably be absent if the product complied with the CE EMC directive. On the positive side, it might be working. Upon connecting the well-illuminated PV panel and a partially discharged battery, the unit moved the voltage around and eventually settled on a voltage. DC wattmeters on both the input and output indicated reasonable amounts of power in and out and output current that agreed with the controller's displayed output current. With the PV operating at a little more than 3 times the battery voltage, the output current was almost three times the input current, as it should be. As of July 18, the refund offered (and accepted) on June 29 has not arrived. ### ⭐⭐⭐⭐⭐ it works great - very difficult to set up. *by W***O on August 22, 2023* it works great - very difficult to set up. not many know this but theres 2 versions of the 20amp, they look identical but the LCD display and functions are a little different, and the manuals are different too. (both manuals are almost useless) if you can make do with the very disgusting button mapping and layout, it will charge just about any chemistry. I have this set to 14.4 lifepo4 and haven't changed it since. Charges 5 different lifepo4, from different vendors, just fine. I'd spend a little more and get a BougeRV charge controller. ## Frequently Bought Together - PowMr 12V 24V AUTO 20Amp Solar Charge Controller, MPPT Charge Controller Intelligent Regulator w/LCD Display for AGM, Gel, Flooded and Lithium Battery Charging - JJN 100 Watt Solar Panels 9BB 12 Volt Monocrystalline Solar Panel High Efficiency Solar Module PV Charge for RV Battery Boat Caravan and Other Off Grid System --- ## 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.pt/products/461285253-keeper1220](https://www.desertcart.pt/products/461285253-keeper1220) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-05*