is the 5w solar charger sufficient for my deep cell boat battery &will it charge up in a weeks time from about 60 percent charge
86462
You would need four or five units to achieve what you need. Would probably be cheaper to charge it with a regular charger for several hours then hook the solar charger to maintain the charge.
86463
Highly doubtful! This product "maintains" the charge. If you have good sun, you might get a 1% increase in a week. But you have a ceiling - I do not think it will get to 65% even if you leave it out a few months.
262551
i use it with two deepcycle batteries, i have a solar cell 68w connected to the batteries, it runs all the time with this setup in my camper
693766
Yes! It won't be overcharge on my home energy at 24hr 7d week all year round. It will be safe to charge with solar panel. It only charge on day time and night time none. As long it's a twelve volt charger to charge these batteries.
513095
I would have to know all about your electrical system to answer that question, (battery amp hours, equipment draw, hours the equipment will be used, how often your main engine alternator would run, alternator output, etc. etc.) unless your boat has room for many large panels, you will not be able to recharge you battery fast enough to keep up. Your best bet is to add another large deep cycle battery. Solar panels recharge your battery/batteries when your boat is sitting and your equipment is not being used, (over a long period of time).
467335
You've probably checked on line, but this is a good site to referencehttp://www.chargingchargers.com/tutorials/solar.html25 milliamps is really small, and may not generate enough watts to bring the controller into play.I connected the controller to a largish solar panel, output approx 20 volts, for keeping my boat battery topped up.. the combination seems to work well at this level.Hope this helps.
220167
If you have a total of 600W then yes, you just need to connect up the panels in series so their combined voltage is OVER 48V but under 150V. As long as the solar panels combined voltage falls between these range then yes it will charge it no problems.
1647261
Hi Mark, Ycpower charges well from mains (power cord). You actually see the battery level increasing to the maximum (100%) within a very short time. But by solar, the charge rate is incredibly low. I don't recall if the battery power has ever risen above 20% on solar charge. It appears solar charging is not effective.
2205027
I reckon a 100W converter should suffice. Based on the fact that the 20V battery is rated at 1.5Ah, and that this charger can flash charge 30% capacity in 10 minutes, it can be calculated by 30% x(60/10) x1.5 x 20, which gives 54W. Factoring power efficiency losses, a 100W converter should be a safe bet.
2259696
switching back and forth between 5 watts and 15 watts did it for me.actually, I bought it for my motor home so i can recharge my dead battery so i can start the engine periodically.It is the best charger i have owned. even if you are stuck in the 70-90 % range, it only takes about 3 hours to charge the dead battery enuf to start my rig.my battery is a 800-1000 peak battery
1334080
it should work like any other solar charger, just do not overcharge any battery.
991509
I bought one for our boat and often charge my phone and laptop from it.I think it would work well for you.
809294
Yes to both questions. I bought a higher amperage battery to use as my primary power source. The charger works well, even when I took it overseas.
778250
This is a rough guess but, 6x35ah is 210 total Ah, and if you have 100w panel/ 12v it's about ~8 amp max. But I find mine realistically charges about 5 amp hrs per hr. So 210ah/5amp is 42hrs of charge time. so you prob have 7-9 hrs in day of good charge, so 42/~8 is at minimal 4 panels... I live in midwest and have less sunlight per day. But I think 4 is about minimal. I work more with electrical consumption than I do with battery charging so someone else might have better charging math, but I am familiar with electrical systems. Hope this helps and sorry for all the math, just wanted to back my answer. Good luck.
1407173
Kathleen O., I don't have a 5W unit, rather a 7W BLKBOX Solar Charger, and I'm very pleased with my solar charger. Placing the solar charger above my car dash (under the windshield), I get a 40 percent recharge on my 4.7-inch Nokia phone during my one hour commute between San Jose and San Francisco; which I consider a very reasonable recharge for my mobile phone. That recharge time is only slightly slower than the phone's AC charger at home. The 5W unit should recharge a bit slower than that (less charging wattage equals slower recharge), and may never achieve 100 percent recharge, but 90 percent or higher recharge from a 5W unit seems do-able. As long as you use the Apple provided charging cable, it should work OK. Other reviewers with iPhone 4 and 5 mobile phones have reported successful recharging using these BLKBOX units.
852539
To some extent, it does a more complete job of charging without overcharging. I found out that I wasn't charging my deep cycle battery enough with the car charger I was using - this critter worked on that battery for about 36 hours before saying it was charged, and the battery worked much better afterwards. At the very least it can eliminate battery problems caused by operator error. ;)If you're considering getting one of these, just get it! It saves a lot of time and reduces the number of things you have to worry about on the boat.
1305692
Hello;In response to your question. Yes, the charger will work quite well for the Deep cycle battery. I use it on my Marine trolling batteries that draw down to nothing all the time. It works great! Jim
1786605
This is a good solar panel. I have 2 batteries connected parallel, + to +, and - to -. This gives me the same voltage- 12 volts. I run my garage door opener and some accessories in my garage off a power inverter. The Ramsond solar charge regulator shuts off when batteries are full. Like T.J. said, make sure you aim the panel for best results, and hopefully its not foggy where you keep your boat!