JZK 20A Intelligent Solar Charge Controller with LCD Display, USB Port, Battery Protection for LED Lighting

Had this just over a week and it seems to be working very well. Instructions fairly basic but good enough to set it up without any problems. Setting the float voltage to 13v (the lowest setting) seems to keep the battery on trickle charge at a constant 12.6v when hooked up to a 10w solar panel. Would have liked to keep it a little lower say 12.4v but not sure that is possible with this controller. That said, perfectly happy with it and full marks for something that only cost £10. Can't comment on long term durability, not had it long enough.

This is being used as part of a trickle charge set up to maintain the battery on a car that is not driven often but has power hungry electronics when the engine is off - a two channel dash cam, a tracker and, aftermarket alarm. So far it seems to be working fine. Dislikes: the enclosed instructions are poor. The basic information sheet is the type of sheet you would reference having read slightly more detailed instructions - luckily there are many online videos with the missing explanations. The voltage display is inaccurate. When it reads 11.8v my multimeter read 12.2v (this was the same with an analogue meter as well). This means having a float voltage set you could be under or possibly over the float set point. The LCD display looks a bit dim for my liking and could benefit from an optional back light or some kind of options for dim, not dim and, switch off. For the price it is not a bad product. Early days so cannot comment on longevity yet. Been less than a week connected.

Works great, I got one 6 years ago and recently thought I'd shorted it out while rewiring, so got another, turned out I'd just left my battery iso turned off. The display is easy to read and doesn't have annoying lights on the front. The only real downside seems to apply to most of this type of product, the cable in/out point are slight forward of the display, so to mount the unit with the screen visible, the wires are visible too. If the wires went in the back of the unit it would be much better.

I had a problem with the first one that was supplied, but this was quickly changed with no fuss. I have been using as part of a small solar system I installed at my allotment to control a water irrigation system pump and it has been working all year with no issues.

I connected it up to my small system (for running a couple of 12 volt lights) according to the instructions. No display, no beeps, no power going to or from the battery, nothing going to the lights. The solar panel has been tested and gives 18 volts, the battery works and the lights work. The only weak link is the controllers.

My last one just stopped working ( a different make ) I have no idea why which I paid £20 for last year, this one has all the info on screen, shows icon when charging, I have it on a camper and as soon as I start the engine, this go'es into idle. I am seeing a big difference already and for less than half the price of the other it is a bargain. It makes me feel like getting another one just in case my home one packs up.

Hit and miss on wether it wants to work or not

Low cost and works well, easy to use, nice peace of mind knowing you won’t over current a car battery with this. Most low power solar panels will output anything from 0-19v which isn’t good when charging batteries. This will regulate the current so it won’t exceed 12v making it safer, it also stops the solar panel draining your battery at night. Only downside is you can’t set individual timers it limits to on at night or on all the time. It’s really designed for lights but can be used for many other solar uses. Still not bad for the low cost.

dobry produkt

Régulateur solaire pwm JZK 20A acheté mais fourni avec la notice du YJSS 20A (probablement identique). Le mode B3 (pour LiFePO4) fixé à 14,6v est non ajustable. Pour préserver la longévité de la batterie j'ai donc choisie le mode B1 (Batterie plomb) à 14,4v avec un seuil de coupure basse à 11 V. Ou Réglé sur mode B1 à 14,2 V et de temps en temps (mensuel/trimestriel ou selon besoin), un court complément secteur avec chargeur LiFePO4 (à 14,4 V) pour équilibrer les cellules si nécessaire.

Ne fonctionne pas

Did exactly what I wanted it to. Say no more.

Lo utilizzo da 4 anni nella casa in montagna e l'ho ricomprato pensando fosse rotto. Invece era la batteria in corto (così mi resta di riserva). Facile da usare: basta collegare prima la batteria, poi il carico e per ultimo il pannello. semplice e funzionale. Come carico ho collegato una presa accendisigari che posso utilizzare con tutti gli accessori da macchina come un piccolo inverter per avere la 220. Per caricare telefonini e tablet vanno bene anche le 2 prese usb interne. Consigliato, non vale la pena spendere di più.