Conditions

Energy sources

Starter battery
Leasure battery
Engine
220 input

Energy consumtion

Pentry fuse 16A
- (OLD Fridge 85W) No new fridge decided yet
- Indicator display (unclear but extremely little, looking for data)
- Waterpump (pentry)(12V 2A => 12*2=24W)
- (Fridge fan (0,6W)) Does this run without the old fridge? Have to check.

Other stuff

Fuse between mppt and battery was disconnected when we burned the mppt. Normally 10?
Battery charger type LG 20

The panel

Specs


Which panel is it?	Previous one	Current one
Manufacturer	Webel Ltd. for Engcotec Gm	EcoFlow
Type	Monocristallin	Monocristallin
Module type	Engcotec W 1000110	-
Peak power	110 Wp	110W(+/-5W)
Peak power voltage	16,7 V	-
Max system operating voltage	600 V	-
Weight approx	11,66 kg	4kg
Open circuit voltage	21 V	21.7V(Vmp 18.5V)
Peak power current	6,59 Amps	5.60A
Short circuit current	7,37 Amps	6.3A(Imp 6.0A)
Noct	-	-20° C to 85° C
Dimensions	1446 x 646 x 34 mm	1050MM535MM2.5mm
Output values	+/- 6%	?
Maximum Series Fuse	15A	?

The MPPT

Specs

ESP32
Diod preventing the protective diods in the box at the back of the panel breaks if the panel is connected with the wrong polarityand preventing old/bad panels to discharge the battery when it is dark. Stuges test shows that this diod will be what limits the effect/power the chager can handle. With a load at 6A he measured 113 °C on the outside of the diod. The it is close to the max temperature (150 °C) on the inside. At a load at 6A he measured 100W in, the used panel in this project is 110W. This is working since the panel never produces 100%. But it is close to the limit if the chager is loaded at 6A.

Testprotocols & measurements

Stuge 10 July (Stuge)

OpenMPPT

In 16V 0.96A  Out 1A 14.11V 14.11W  D6 Tterm=48.7°C N1
In 16V 1.88A  Out 2A 13.79V 27.57W  D6 Tterm=55.1°C N1
In 16V 2.80A  Out 3A 13.51V 40.53W  D6 Tterm=64.7°C N1
In 16V 3.71A  Out 4A 13.25V 53.01W  D6 Tterm=79.7°C N1
In 16V 4.62A  Out 5A 13.02V 65.12W  D6 Tterm=93.8°C N1
In 16V 5.53A  Out 6A 12.78V 76.70W  D6 Tterm=110.9°C N0

In 17V 0.96A  Out 1A 14.55V 14.55W  D6 Tterm=49.2°C N1
In 17V 1.89A  Out 2A 14.47V 28.93W  D6 Tterm=61.7°C N2
In 17V 2.82A  Out 3A 14.39V 43.16W  D6 Tterm=73.2°C N2
In 17V 3.77A  Out 4A 14.32V 57.27W  D6 Tterm=84.9°C N2
In 17V 4.74A  Out 5A 14.23V 71.16W  D6 Tterm=98.2°C N1
In 17V 5.62A  Out 6A 13.95V 83.76W  D6 Tterm=109.6°C N1

In 18V 0.91A  Out 1A 14.54V 14.54W  D6 Tterm=48.2°C N1
In 18V 1.79A  Out 2A 14.48V 28.95W  D6 Tterm=58.4°C N2
In 18V 2.67A  Out 3A 14.15V 43.15W  D6 Tterm=73.6°C N3
In 18V 3.56A  Out 4A 14.32V 57.27W  D6 Tterm=85.7°C N3
In 18V 4.47A  Out 5A 14.22V 71.44W  D6 Tterm=99.2°C N3
In 18V 5.39A  Out 6A 14.15V 84.84W  D6 Tterm=113.0°C N3

In 19V 0.88A  Out 1A 14.63V 14.63W  D6 Tterm=54.6°C N1
In 19V 1.70A  Out 2A 14.64V 29.27W  D6 Tterm=53.0°C N2
In 19V 2.54A  Out 3A 14.39V 43.15W  D6 Tterm=63.8°C N3
In 19V 3.39A  Out 4A 14.31V 57.28W  D6 Tterm=76.7°C N3
In 19V 4.23A  Out 5A 14.23V 71.18W  D6 Tterm=88.5°C N4
In 19V 5.11A  Out 6A 14.15V 84.87W  D6 Tterm=103.6°C N2

In 20V 0.83A  Out 1A 14.55V 14.54W  D6 Tterm=48.2°C N1
In 20V 1.63A  Out 2A 14.47V 28.94W  D6 Tterm=54.2°C N2
In 20V 2.43A  Out 3A 14.39V 43.17W  D6 Tterm=61.1°C N3
In 20V 3.24A  Out 4A 14.32V 57.28W  D6 Tterm=75.1°C N3
In 20V 4.02A  Out 5A 14.23V 71.18W  D6 Tterm=85.3°C N4
In 20V 4.84A  Out 6A 14.15V 84.88W  D6 Tterm=104.4°C N4
10. Jul., 09:26

Elektra resources and similar

The current setup

Cables & connetors

Red/Black connectors (Powerpole 75) not water proof
Panel connectors (MC4/H4) cannot hang unconnected in moist!

Dictionary

English	Swedish	German
Rated voltage	Nominell spänning/märksmänning	Nennspannung
Alternator	Generator	Lichmachine