What is max charge voltage, can I program it to limit at 28.8V for my LIFEP04 batteries? I will use four 265W 36V panels in series.
1657624
Battery voltage range is up to 72 volts. But you can not connect 4 of those panels in serice since the peak solar voltage is 150v and 4 panels will damage the unit. So better go 2 sets of 2 panels in series/parallel.
1157684
I actually have 4 of these 100W panels, with 3 VMAXtanks Vmaxsir 125 AGM deep cycle 12V 125ah rechargeable batteries. Today I ran 3 circuits in my house. One for the computer, the A/C motor on my central A/C, and my refrigerator. This configuration is exceeding my expectations!
2062604
Marion,If I understand your question correctly, you would need to configure your battery bank to match in the voltage level of your inverter, then set your MPPT charge controller to the same voltage as well as wire your battery bank to match the same voltage. If you are planning to run a 48V system, you would need to wire four 12V batteries in series to get to 48V to match the charge controller and inverter (assuming both are set to 48V). I hope this helps.Solarhome Sales Team
1332100
The charge control can handle up to 7A. Your 30 watt panel puts out ~1.68A at high noon. You should be fine with one charge controller charging two or more batteries and it would require more charge time. Just make sure you hook up your batteries correctly. Personally and for convenience I would much prefer to get two charge controller with two solar panels for the two batteries so that I could avoid having to move and or reconnect the batteries. A larger solar panel can would benefit you quite a bit if you need to drawn power from the battery each night. Hope you are using deep cycle batteries.
402563
These are 12 volt 35ah batteries. (Volts x amps = watts) So 12vx35ah = 420 watts max capacity per battery and 840w for the pair. If you want your batteries to last, do not discharge below 50% -- Therefore, with (2) batteries at 420 watts each, there is a usable 420w if you want your batteries to last a reasonable amount of time (500 cycles) - Your application may already have a low voltage limiter which won't let you drain below 11.9-12 volts which is about 50%
1567084
Well yea, use a battery charger , or a deep cycle charger with a max of 35 amp .Most deep cycle batteries use a slow charge rate anyway which is a lower amp charger.Just keep the amp below 30 to 35 amp @ 12 volt. This is not a 24 or more system charger.
1590699
13.8 volts at 30 amp continuous = 414 watts. I have only run 20 amps continuous with spikes to 30 amps so far. Battery charger requiring DC power???
123867
You would find that the output would drop to zero by 22V. I have one connected to a big 24 volt battery rather than a panel directly, and the output varies from around 430 watts at 28 volts (the peak voltage when charging) and drops to 220 watts at night when the battery is around 24v at night. The 600 watts is a peak for when panels give high voltages.
28026
Voltage range is 2.7-9 volts, so it can take 1- 3.7V (4.2V charged ) or 2-3.7V ( combined in series 8.4V charged) Li-Ion rechargeable batteries. P60 drop-in modules don't "blow" if you don't exceed their specific input voltage limits. The max input voltage for this module is 9 volts, so you can use a maximum of 2- 3.7V (2x 4.2V charged =8.4V total ) Li-Ion batteries, e.g. 2-rcr123 (16340) or 2- 18350 or 2-18500 or 2-18650 etc., depending on your light. Hope this helps you. Remember to make sure that if you are using 2 Li-Ion batteries in series, that both are the same manufacturer, age and especially the same voltage! No kidding! Voltage range is 2.7-9 volts, so it can take 1- 3.7V (4.2V charged ) or 2-3.7V ( combined in series 8.4V charged) Li-Ion rechargeable batteries. P60 drop-in modules don't "blow" if you don't exceed their specific input voltage limits. The max input voltage for this module is 9 volts, so you can use a maximum of 2- 3.7V (2x 4.2V charged =8.4V total ) Li-Ion batteries, e.g. 2-rcr123 (16340) or 2- 18350 or 2-18500 or 2-18650 etc., depending on your light. Hope this helps you. Remember to make sure that if you are using 2 Li-Ion batteries in series, that both are the same... » Read More Voltage range is 2.7-9 volts, so it can take 1- 3.7V (4.2V charged ) or 2-3.7V ( combined in series 8.4V charged) Li-Ion rechargeable batteries. P60 drop-in modules don't "blow" if you don't exceed their specific input voltage limits. The max input voltage for this module is 9 volts, so you can use a maximum of 2- 3.7V (2x 4.2V charged =8.4V total ) Li-Ion batteries, e.g. 2-rcr123 (16340) or 2- 18350 or 2-18500 or 2-18650 etc., depending on your light. Hope this helps you. Remember to make sure that if you are using 2 Li-Ion batteries in series, that both are the same manufacturer, age and especially the same voltage! No kidding! « Show Less
1014216
Each 24 volt ePVL-144 supplies a maximum amperage of (144watt / 24v = 6 amps) to the charge controller. Three of them wired in parrallel ( with proper blocking diodes) will produce a maximum amperage of 18 amps (3 x 6 amps = 18 amps) input into the charge controller Assuming you wire your batteries in a 2 x 2 bank for 24v @ 200 amp-hour capacity, you will need a 24volt charge controller capable of handling a minimum of 20 amps input. You may want to get a 30 amp controller for a little extra amperage headroom for safety. Your inverter needs to accept 24v input and have enough wattage on each outlet to power you desired equipment. Your battery bank has a maximum power output of ((24v x 100 amp) x 2 banks)= 4800 watts for one hour. It is not recommended to fully discharge the batteries or to run the battery bank at maximum amp capacity (200 amp hours in your case). AGMs should be discharged no more than 80% of thier rated power (100 amp-hour x 0.80 = 80 amp-hour). In your arrangement this reduces your useable wattage to ( 4800 watt-hours x 0.80 = 3840 watt-hours). I would say a 5000 watt inverter would safely handle you battery capabilities. The inverter needs to accept 24volt DC input and should be a true or 'pure' sine wave variety if you will be powering sensitive equipment like computers. You could use several smaller wattage inverters in a stacked configuration if you do not have the funds for the larger inverter. For example you could start with a 1000 watt inverter and add up to 4 more as your budget permits. Be sure to buy stackable inverters if going this route. Here is a link to AGM battery information http://batteryuniversity.com/learn/article/absorbent_glass_mat_agm Steve
871167
If I remember correctly at 22.2 v on 6cell Lipo it generates 5.5hp. Hope that helps!
862509
I believe the limit would be 4 (2x 6v in a series/parallel configuration). To be sure, contact the BatteryMinder folks. I'm using it on 4 7 year old golf carts myself although I have 6 total from a previous solar setup.
119544
Adding to what others have said, I would go a little higher than the max Amp rating but also limit according to your battery. My unit feeds anything from 225Ah to 360Ah battery banks. If you use the 10-15% of Ah capacity rule then a 30A fuse is fine. I would have to swap in a much smaller fuse if charging a smaller battery bank and of course limit the PV power coming in or connect it to a smaller array.
31482
I have had four one hundred watt panels hooked up to this same charge controller for nearly a year and it works fine. At first, I had them hooked up with the panels at 12v and the battery bank at 12v, then I switched the hookup to two sets of two panels in series to put the panels at 24v with the battery bank remaining at 12v. I get a little more power out of the panels this way because a lower amperage means a smaller voltage drop between the panels and charge controller, even though the wattage from the panels is the same. It works fine. With an MPPT controller, the voltage of the panels is not dumped directly into the batteries so you can hook it up either way. If you hook the panels in sets to reach 24v, then your only limit is the 30 amps to the battery bank. Anything above that is simply lost.
418849
All 4 of my chargers are set for 4.2v.I have had NO problems at that setting But, always charge new batteries as soon as you get them.I charge all my batteries, any size in it.The charger is automatic , stops charging at the correct voltage.George
338119
Actually, if you set the output voltage and amperage limits using the trimpots. Once set, it will govern the output to whichever limit it bumps into first. So if you set the max charging current to say 500ma @ 24v then it will reduce the voltage to stay at/under 500ma while never allowing the voltage to exceed 24v. In theory, if you set the voltage to just under you battery's fully charged voltage and then set the current to a sane limit it should float when charged. For 'back' feeding to the solar panel, just put a diode in-line on the output. You can think of diodes like little check valves. ;)
1326685
Need clarification. Are the error codes displayed when connected to the solar panel or lipo batteries after having used on solar panels? Not sure but these are made to check voltages on cells of a battery. The batteries it's designed for are 3.7v on each typically charged to 4.6 or so. If the volage exceeded that it may have damaged the circuitry. Either way they are so cheap I would just get new ones.