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  • PSA report: I'm Steering Clear of Giandel

    Last year I bought the new and improved, black-shelled Giandel 2200w with 3 year warranty. This year, a few months back, it died. Giandel sent me a replacement, good to their word. But the bearings in the replacement's fans are already grinding louder than a coffee grinder after a few months...
  • Giandel Warranty Update

    If you have or were considering a Giandel Inverter, I thought I'd share how interacting with them was going. I took a video of the faulty inverter wired into my setup. I showed the sound the 2200W unit made when I turned it on, and the following audible alarm and 'OL' message. They asked me to...
  • My portable solar rig

    It's not milk-crate portable but it"s close! My fourth solar rig, built to be very portable, in a bulb crate: -100a lifepo4 -2200w inverter -USB fast charger -many zip ties :) ...now please, don't ever let me drop it :) I'm sticking with an ANL 150 fuse paired with a 100a bms... For now.
  • 4/0 cables & 250ANL fuse heating

    On my 2200w inverter both the 4/0 cables & 250ANL fuse heat up when the air fryer (rated 1500w) does it's thing. How hot is too hot? Last summer I ran my 1500w toaster over 35-45 mins at a time roasting tomaotes so for 15 mins in the air fryer to see that heat... I checked the tightness of...
  • Renogy MPPT-no load- LOSES volts?

    Has anyone come across this before? My renogy rover li 40a charged my renogy smart lithium 170ah batts to 13.3. I've been waiting to see this because I've been stuck at 13.2 for a couple days and sonput no load on it to see how long it would take. At the end of a couple days waiting, still...
  • What makes an MPPT 'take a break'?

    This weekend my Renogy Rover Li 30a MPPT decided it no longer accepted solar charge from my panels. When I swapped it with the Rover Li on my other array of panels (both 3x100watt), it still wouldn't work. I figured I'd blown something inside or it had otherwise malfunctioned...but today I...
  • Safe to mix 4/0 and 1/0?

    Rookie mistake, please help? I have a 2200w inverter so have bought 4/0 + and - cables to move from inverter to batteries. The 1 awg that was there heated up under 1000w loads or higher. But I forgot about the fuse/circuit breaker. (fuse now, breaker screwed on panel but won't use til ironing...
  • Converting 24v Growatt to 12v battery bank?

    I'm putting together a second solar array. Can someone tell me if I've got the right idea for step down? Can a Victron Energy Orion IP20 24/12v *70A* DC converter safely step down a Growatt 24V 3000W Split Phase Solar Inverter Growatt with 80A MPPT (into 2x 170Ah Renogy *12v*) LifeP04's? I'm...
  • Can 13.8v on panels overload 12v inverter?

    My Giandel 2200W buzzed, read OL (overload) and shut off. I disconnected all outputs, waited half an hour, tired again: it buzzed, read OL and shut off. Slight buzz inside inverter second before audible alert buzz. It's a really sunny day, my 400ah battery bank is near/full. 600w panels...
  • Minimal AGM swell...problem?

    Hey all, My oldest batteries, a 4-battery AGM bank (about 4 years old) were using the default Renogy Rover charging pattern and one of them swelled up. I took the bank apart, removed that battery and tested. All of them hold a full charge, as shown by multimeter testing, using an agm-rated...
  • Inverter overload? Why? (Giandel 2200W)

    [cross-post with off-grid inverters] Happy Friday folks. So... My Giandel 2200W buzzed, read OL (overload) and shut off. I disconnected all outputs, waited half an hour, tried again: it buzzed, read OL and shut off. Slight buzz inside inverter second before audible alert buzz. It's a really...
  • 2 wires in PV+? (Renogy rover li MPPT)

    Any reason I can't combine 2 positive wires from 2 arrays into one renogy rover li 40a so long as I keep to under 40a? It seems simple enough and the plates and screw that hold the pv cables are rates up to 6awg... So can I put 2x10awg into my PV+ & pv- or is this a no-no, and why? Thanks for...
  • Aliexpress 1000Ah LiFePO4 batteries-risk or value?

    I am not sure I can source the parts or trust my workmanship on this excellent 'DIY 12v 100Ah LiFePO4 Solar Battery for $555' by DIY Solar Power with Will Prowse. But I found this page on aliexpress at about same price. Does anyone know any of the companies to be trustworthy? Are their...
  • Combining 100w panels (different makes)

    Hey guys, I can't find clear data for the brands of 100w solar panels I have. I would appreciate your help? How would you best mix up these safely without purchasing limiting diodes? I'm using 4x40A Renogy controllers. Thanks in advance. I don't want my maintenance and spring cleaning to blow...
  • mixing battery cables

    My battery bank of 4 100a agm 12v batteries is connected with 1awg and 1/0 cables. The charts I've checked say both sizes will play nice up to 150amps. I have a 2200w Giandel. Cable lengths are all under 1ft on batteries & 18" on cable to inverter. The biggest load I'll draw is 1500w at one...
  • ANL fuse 'ticks' when load ends?

    When I turn off a heavy load (1500watts) my 250a ANL fuse 'ticks' a few times. Does that mean something about the life of the fuse? (All connections are tight)
  • Add eyelets (M10) to Ampere Time charger?

    Add eyelets (M10) to Ampere Time charger? Can I cut alligator clips off and splice an SAE connector, then buy exisitng eyelet clips (or manufacture my own?) so long as I stick with same gauge of wire, or beefier? Thx
  • Where attach my mppt

    Silly (maybe?) question: I'm upgrading my cables from my 2 renogy rover li MPPTs (each has a separate 300watt panel array) to my battery ( to avoid voltage irregularities with mppt attached to inverter posts). I have 2 renogy lifepo4 12v batts wired together. Any reason I can't attach my mppt...
  • New Renogy 170ah bottoming out

    I hooked up 2x new renogy 170ah 12v batts up to my renogy rover li 30a controller fed by 300w of 12v panels. This morning the bank was sitting at 80+% until I turned the air fryer on. After 4 or 5 minutes of 1500w the battery read 11% ?! I turned the load off and the battery immediately...
  • Growatt Settings Advice

    My Growatt SPF 3000TL LVM is a tad obscure to set up (48 settings). I'm using AGM batts.Please tell me if you catch any mistakes in how I set a few of them? Basic Settings 05 USE 05 (to let me alter 11, 12, 13) 11 10a (only trickle charges by AC) 12 at 24.6v tops up on AC 13 at 24.7v...
  • Cross-Post: Growatt settings advice

    My Growatt SPF 3000TL LVM is a tad obscure to set up (48 settings). I'm using AGM batts.Please tell me if you catch any mistakes in how I set a few of them? Basic Settings 05 USE 05 (to let me alter 11, 12, 13) 11 10a (only trickle charges by AC) 12 at 24.6v tops up on AC 13 at 24.7v switches...
  • Renogy Rover 40a MPPT: overpanelling?

    Hey all. My Renogy Rover Li 40a manual says max solar input is capped at 12V @ 520W, and max solar voltage at 100 VDC. I have 6 100w panels. I don't want to push or degrade my MPPT, but...ok I guess I was hoping someone had experience with my situation and could offer their wisdom. Will I fry...
  • What do you out Under your batteries?

    Hey folks, I'm building my second solar zetup now and I'm wondering what you chose to put beneath your batteries. Mine sit on wood with slats for ventilation. Should I put rockwool or something else beneath for fire safety? Thoughts? I'm back and forth.
  • D+ ignition for DC charger (cigarette lighter?)

    Hey all, I'm adding a dc-to-dc charger to my portable solar box. Can I use the cigarette charger for a car inverter, plugged into an ignition-only cigarette lighter port? If so, is wiring the negative of the cigarette charger to the common negative bus of my fuse box, and the positive to the D+...
  • Combine LiTime/Redodo 24v clones

    I have two clone-brand batteries a LiTime and a Redodo, both with identical capacity. One is older, and one is within the last month. I understand the chemistries will mimic the lower performer of the two, but if the sum total is still a good percentage of the total amount available despite...
  • Growatt 24v Low DC cut-off at 21v????

    Why is my Growatt 24v SPF 3000 TL using a Low DC cut-off of 21v? And why can't I change the setting! Shouldn't it be, at lowest, in the 24.5v range to avoid over-discharging? What can I do?
  • 600ah bank vs 1500w toaster oven

    600ah bank vs 1500w toaster oven, powered by a Renogy Rover Li 30 powered by 300w of panels, all feeding a 2200w Giandel inverter. Am I hurting my batteries when the Rover MPPT shows dips to 38% for 10 or 15 seconds, then jumps back up to 47% or 55%? The second the load ends the batteries...
  • Midnite Solar Combiner driving me NUTS

    Okay this is crazy...I'm doing something wrong or are all my circuit breakers stupidly designed. When I screw my 6 awg PV positive cables in to the Midnite Solar mnpv-6 THEY FALL OUT! The top of the circuit breaker has a bus bar that fits inside the steel ring when you tighten the screw to...
  • doubling up on battery bank cables

    Recently the forum helped me understand something-you can double up on cables to get better AWG (for example two 2/0 AWG'S act as 4/0 cables between a fuse an an inverter). Is there any problem doing the same on the cables connecting my battery bank? I have 4x100a AGM's connected with 1 AWG...
  • Renogy Rover Li 40a & 30a conflict?

    Both have same size arrays of 3x100w panels. Both wired the same. One is pulling 0.4a from an array while other sees an actual load. Is this a conflict I should know about? Did Ibplan my system wrongly?
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