mppt

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  1. T

    Anyone know of a repair service for Axpert inverters

    Hello All I have an Axpert MKS 4 (conversol Re badge) 5.5 Kw inverter that I have had in and running for a little over a year. From the start it played up and I had a couple of f12 dc-dc overcurrent faults that re set and carried on working, with a little fettling of the charge current and...
  2. hey-hey-my-my

    Multi-stage charging: skipping absorption?

    Good morning, I'm on the road year round in a motorhome with two 100w solar panels (soon to be doubled) charging a 260ah AGM battery via a 20a MPPT charge controller. I also hook up a 30a multi stage mains charger about once a week to properly charge the battery. I'd like to get the most out...
  3. Javadali

    MPPT Solar Charge Controller Sizing for 1200 Watt solar Array

    Hey everyone! I am drafting out my first solar power off grid system for my back yard shed and came here in hope to get some good recommendations from you guys on trusted a charge controller which will support my current specs but also give me room to grow as I improve on this system. Below are...
  4. O

    Mismatched panels & MPPT sizing

    Hi there, I just purchased a sailboat and its electrical system was put together in questionable ways.. It came with an 815W array of mismatched PV panels, linked to a Xantrex C40 (40A) PWM charge controller, charging a 1030Ah 12V lithium battery bank. First question: can mismatched panels...
  5. T

    2 Panels, 1 Alternator & 1 MPPT. How To?

    I need to wire up my solar panels to my motorhome leisure batteries. I have a 160W permanently mounted panel that will be hard wired to my MPPT controller. I will occasionally wish to add a portable 100W panel to the setup. Can I connect this portable panel directly into the MPPT as well when...
  6. W

    ALTIVAR 312 and mppt power tracking for a solar pumping system

    Hi all, I need to perform the following pid control using an altivar312, want to read the DC bus voltage (that is the solar panels voltage), and use a pid control to keep this voltage constant in order to make a mppt follower. The idea is to change the frequency driven to the motor. If dc bus...
  7. Energetic

    twin mppt transformered inverter

    Is there one?
  8. D

    AGM batteries and MPPT controllers compatible?

    Hi, I'm looking to create a small solar panel system (80w panel) and am looking at a 10A MPPT controller off ebay which has good reviews. However, it does not specify compatible battery types and I was wondering if an AGM battery of around 35ah would work with it? I searched around just before...
  9. M

    Schottky diode / inverter with 2 MPPT

    Hi I have a system of 3.45 kW with 20 photovoltaic panels (LG 235 M1C-C2 ) and two strings; one oriented to the East and other one to West (10 panels E and 10 panels W). The slope of my roof is + / - 25º. I have a Sunny Boy 3300 with one MPPT. I consider a hypothesis to change to another one...
  10. G

    Strings uneven MPPT Voltage

    Hi all I have just had a 3920KW Sharp 16 X 245W panels fitted with a Solar River SR4K4TLA1 inverter. There are 2 strings. One is currently reading around 330V and the other is just below 200V. 6 of the panels are landscape and 10 are portrait. I have since found out that 6 are on one string...
  11. W

    Sunnyboy 4000TL twin mppt

    A few days ago I had installed a sunny boy 4000tl inverter. 16 suntech stp240s-20wd panels 8 east and 8 west (2strings) 3.84kWp The display alternates between strings. But string 2 shows 0v always. The system has been generating between 1kWh and 3.4kWh per day. They are going to come out...
  12. M

    Kostal Pico 3.6 inverters for sale,2 MPPT like Power 1 3.6

    I have an overstock of 4 of these very handy inverters. they are german made, excellent quality, IP rated, with a wide voltage range but most important they have a dual MPPT which is well handy given the current lack of power one inverters out there. cost is £1200 +VAT, buyer collects...
  13. B

    Small dual mppt inverter?

    I am quoting for a small job where the roof changes pitch and has a dormer, In 240W panels I cound get 1680W on one string and 960W on another. Anyone know of a small dual mppt inverter that could manage that? Regards Bruce
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