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Thanks fellas. No I don't have a clamp on amp meter unfortunately. I can't do it now, but I'll hook the charger up again and let it sit for another 24+ hours or so and see what happens. The battery is actually in the back of my 4x4. I hooked it all back up again this afternoon. I have a Renogy...

I did purchase this charger before lithium batteries were as widely available as they are now, so it wouldn't surprise me if it may be lacking some technology. Do you think it may be a case of that's all the charger is going to do for my battery?

Been about an hour. The battery's at 13.2v Thanks for any help.

Thank you both. I'll do that, disconnect the battery and wait the 30 mins and get back to the forum. Thank you.

Hello. I have a 210Ah 12v lifepo4 battery that I've been charging with a Noco Genius G7200 charger. It's been charging for at least 30 hours and isn't going past the 75% indicator. Is this normal, should it take this long? Is the charger not the correct type? (images below) Could the...

Yep, bit of ashame that. Thanks Bud. Appreciate the help.

Thank you MichaelK. That 18v I can't remember if it's Vmp or Voc, but I can easily measure it this weekend with my multimeter and I can work it all out then. But either way it looks like I'm OK to put that second blanket in series. Thank you for your help.

Hello. Just looking for confirmation on my assumptions below. I have a Renogy 40A Rover Elite MPPT controller. I currently hook a single 160W solar blanket up to it, but now I need a bit more charging power, so I'm looking at getting a second blanket. My current blanket outputs around 18v...

Thanks Bob, I'll check that out.

I purchased a PZEM 051 meter such as this: It's not bad, but it only seems to show me how much power has been consumed. I'm wondering if anyone can recommend a power meter that displays power remaining. I only want to spend around $20 - $30 if possible. Thanks.

Thanks for all the info. Here are some specs from the web site: Voltage at Pmax (Vmp) 18.2A Current at Pmax (Imp) 13.74A Open-Circuit Voltage (Voc) 22.3V Short-Circuit Current (Isc) 14.62A But what I'm wondering about is, do those marks indicate physical damage to the cells...

I hooked them up in parallel and got about 19-20 volts and 10 amps out of them according to my Renogy MPPT controller.

Wondering if anyone can tell me whether these marks on some panels I have indicate damage or anything else??? The above looks like crush damage. and this one looks like it indicates where something is wrong, broken faulty???? This panel only had these 2 marks. Thanks for any help.

Thanks Mike. I can check the voltages. I don't need to be specific here, I was just trying to clear up some knowledge holes. Thanks for the help.

Thank you both. So from the diagram, PV B is actually 2 panels I was going to connect in series and PV A is a solar blanket I want to use if I need additional solar for recharging (this is in my RV). So if I reconfigure PV B to 2 panels in parallel giving me 20V at 40A, I should be OK to add...

If I have two panels connected to a single MPPT charge controller and the output of one panel is greater than the other, is there a risk that the more powerful panel could feed into the less powerful panel and damage it? In the diagram below, is there any risk of PV B damaging PV A, as it is...

Thanks Substrate, I'll check that out and see what happens.

Thanks snoobler, it is that model. Thanks for all the help.

Hello. I bought a Noco Genius 7200 charger several years ago, before I was interested in lithium. All the documentation says it works with lithium batteries and there is a lithium setting on it, but I'm a little unsure. I'm wondering if anyone else has any experience with these chargers and...

I'm setting up a new 12v setup in my RV. I have a single lifepo4 battery which will be charged from a seperate MPPT CC and DC-DC charger (2 physically seperate items, not combined). Should I connect the negative battery terminal on the lifepo4 battery to the vehicle's chassis? When I look at...

Thank you both for your help. These batteries are not ones I've constructed, they've been purchased from a retail outlet. I'm not sure I have any info on the BMS's within the batteries. Is that going to be a problem with charging & discharging???

Hello. I have a 210Ah Lifepo4 battery and want to add a 100Ah Lifepo4 battery in parallel to boost capacity. Both batteries are Lifepo4, same voltage (~12v) but from different manufacturers. I know I can add them in parallel, but I'm wondering about charging and discharging. Is it safe to...

I'm thinking of using a Y cable to my lifepo4 battery, with one connector going to the MPPT charger and the other to the DC - DC charger. I'm wondering if the output of the MPPT charger may feed into the output of the DC-DC charger when the vehicle is switched off? The panels will only be used...

Sorry here's the link to the DC DC charger with MPPT: https://au.renogy.com/dcc30s-12v-30a-dual-input-dc-dc-on-board-battery-charger-with-mppt/

Yep. that's it, just wondering if I can get away with 1 box instead of 2. And another question. If I go with 2 devices, is something available I could use that would automatically switch between alternating charging and MPPT charging? For example, when I pull over and plug in my solar panels...

On my RV I have a 200Ah Lifepo4 battery and 250w of solar panels. My current plan is to purchase a seperate DC DC charger and MPPT charge controller. However space is an issue in my RV, so I was thinking of a combined Charger & Controller. But all the combined charger/controller combos I've...

Thanks very much for the help, it's greatly appreciated. Yes, @fratermus the folding panels are just 2 fixed panels in a frame that fold together to pack away.

Hello. Just looking for some help with my proposed setup. I've decided to use 2, foldable panel arrays to recharge the vehicle mounted lithium batteries in my camper. I'm wondering about the physical connection of the two arrays and MPPT controllers. Can I simply get a Y cable and plug 1...

I'm looking at a panel that I could make fit in the space. It's listed as 220W. Size in 930mm x 710mm = 0.66sqM. So therefore 1000W/sqM x .66 x 20% = 213.85W But the Voc = 22.5 and Isc = 13.5 which = 303.75W And the Vmp = 17.5 and Imp = 12.22 which = 213.85W So it could be a legitimate...

Yep it sure does take some time. Thanks for the help, I really appreciate it.

Thank you both for your help. I was thinking of mounting something on the roof so I can use solar while driving as sometimes we can be on the road for 10 hours. I'll work out what capacity panel I can use for the area I have, maybe it won't be worth putting a panel on the roof at all??? Thanks...

Hello, Is it possible to determine what capacity panel I can get, for given dimensions? I have a space on my RV of 1200mm x 650mm where I can mount a panel. Can I use those sizes to determine what capacity panel I can get? Currently I'm just Googling 200W panels and looking at their...

Portable panels that fold in half for storage, are the two panels usually connected in series or parallel? Or is it a mixture? I'm wondering if I could store them folded on my roof, but at the same time have them wired up, so one could at least be charging while the vehicle is parked. I can...

Thanks Bud, that's a great help. :)

I don't have a lot of space on the roof of my RV for panels. I'm thinking I'll be able to have a panel on the RV roof, but have to use portable panels setup on the ground once stopped to give me enough solar. Do I need to match the open circuit voltage of panels if I join them in parallel or is...