Renogy 10 Amp 12V/24V PWM Negative Ground Solar Charge Controller Compact Design w/LCD Display for AGM, Gel, Flooded and Lithium Battery, Wanderer 10A

Exactly what I needed
I have an IRLP node with a 12V lithium battery for backup should the power go out and I needed a charge controller as the DC in I have is about 20V, which is naturally too high to simply directly connect. This controller is exactly what I needed. It will do SLA, flooded and lithium chemistries, you need to select type of battery manually, and you can dial in what charge voltage you want, in my case, according to the battery I have connected, it wants to see 14.4V.You can set up the LCD readout to display what you want for the most part and it has performed flawlessly since I have had it. The instructions are fairly clear on what you need to do to set it up and it actually is pretty easy. It has worked well during outages, switching from the input source to the battery is seamless. I am very happy with this controller and have already recommended this brand to my friends that were looking for one for their various reasons.

Significant battery voltage reading error with temp sensor attached.
4 stars explainedPros-charging algorithm voltage values are correct as measured with DVM (only flooded, agm and LiFePo4 tested)-LiFePO4 charge voltages can be set by user from 14.2 default to most common values depending on battery manufacturer spec. I use 14.6 volts (new). 2018 version default was 14.4 volts-Completely sealed against elements-When equipped with Temp sensor, will include battery temp on the display rotation (new). Previous version required manually toggling the display-shows input Panel voltage (new).Cons-Battery voltage readings can be inaccurate for all battery types and worsen with temp sensor attached (but solar panel voltage readings OK).-Exchange to get a controller that read accurately resulted in an improvement, but attaching temp sensor again introduced .2v to .4v error.-Battery type selected does not display by default (previous versions did, i.e. Gel, Wet, LiFePo4, AGM) Have to push buttons on new version to go into Select Batt Type menu.-Battery type selection button often unresponsive.-Selecting LiFePo4 charge voltage values sometimes not responsive; if desired value is passed up in scrolling, could not scroll back; had to scroll through full range and couldn’t get a response for each push of the button.-Panel and battery connection LEDs no longer present. Loss of an EZ visual status observation, possibly an energy saver. Must wait for status to scroll automatically or must scroll manually through display to see status.–Auto scroll interval too long to see 5 parameters. Two secs per parameter should do it.-Hard reset process discussed with Renogy to clear possible errors not described in manual and might or might not work. (later determined attaching temp sensor caused the incorrect readings)In a nutshell, some of the improvements in this version are welcome and some of the old features are missed. But that isn’t the problem.This newer version had inexplicable battery voltage reading errors not present in in 2018 versions I own. Amazon and Renogy were great in trying to get a working replacement, but in the end, decided to abandon that effort in favor of a refund for now.LiFePo4 does not use temp compensated charging as lead acid batteries do. So, when the LiFePO4 battery voltage read spot on, backtracked to see what was different. The difference turned out to be the temperature sensor. I used the sensor for flooded and AGM, but disconnected it for LiFePo4. Attaching it caused a substantial voltage reading error for all battery types that made it impossible to accurately determine battery state of charge. Charge algorithms didn’t seem to be affected when measured with an external DVM. Neither of the 2018 versions I own are affected by attaching the temp sensor.One other thing to remember about LiFePo4 batteries is they do not like to “float” at much above 13.6 volts after reaching full charge. This isn’t much of a concern in solar charging because charging ceases in the absence of solar energy. Thus there is no real need to have a voltage limited float stage setting after the battery is fully charged and balanced.This is the very first time I’ve given 4 stars to an item I’ve been dissatisfied with, but this controller, even with the battery voltage reading issue still offers useful functionality once set up. Use an external monitor if you want accurate voltage readings to monitor state of charge when using with the temperature sensor. Otherwise, I especially like the user defined charging voltages for LiFePO4 as values can vary among LiFePO4 manufacturers. It’s important to use the right setting.The temperature sensor addition should only cause the controller to do its job of reducing charging voltages above 77 deg F and increasing charging voltages below 77 deg F where temp compensated charging is necessary. It should NOT affect the accuracy of reading battery voltage. An otherwise 5 star controller gets a “pushed” 4 stars. It does all things well except show acceptable values for temperature compensated flooded and AGM battery voltage. Both the original and the replacement returned to Amazon citing the Renogy case number. If the accuracy of the resting voltage is of utmost importance, then 3 stars.

Good PWM charger – Easy flush-mount install – Replaced GoPower
Started having issues charging our 300AH Lithium battery recently. I thought it may be the battery BMS but thought I’d first replace the GoPower solar charge controller that was 2.5 years old. The GoPower controller buttons never worked properly so it was time for an upgrade.As soon as the wiring was done (took 5 mins), the battery showed it was charging again. I was able to adjust the Renogy charger to 14.4 volts, which the battery manufacturer recommended. For $36 it was a cheap fix and came from a reputable company.

Son cargadores solares de excelente calidad y modernos, vienen hasta con número de serie, funcionan muy bien con batería LiFePO4 y además vienen con la función de TIMER, los recomiendo ampliamente para cualquier tipo de proyecto fotovoltaico de iluminación.

Los equipos Renogy funcionan sin problemas, son fáciles de configurar y seleccionar el tipo de batería a utilizar, la identificación automática del voltaje es otro punto a su favor