CN3791 MPPT solar charger, MPPT voltage 12V

preview_player
Показать описание
Testing the charger. At first sight it looks OK, but it turned out when the voltage drops below the MPPT voltage (for example a cloud blocks the sun) the charger stops chrging and doesn't restart. It is not acceptable.
  1. Norbert Virág
  2. CN3791
  3. solar charger
Рекомендации по теме
Cn3791 MPPT solar 0:03:51

Cn3791 MPPT solar charger module - Connection and Working

CN3791 MPPT solar 0:00:45

CN3791 MPPT solar charger, MPPT voltage 12V

Introducing 15 MPPT 0:00:17

Introducing 15 MPPT 3 7V CN3791

Solar Battery Charger 0:11:47

Solar Battery Charger (LiPo/Li-Ion) || DIY or Buy

Next-gen DIY Solar 0:16:52

Next-gen DIY Solar MPPT controller - cheap, simple, efficient. Based on PIC12F675 MCU.

#155 The 5 0:12:00

#155 The 5 Best Solar ChargerBoards for Arduino and ESP8266

CN3722 MPPT SOLAR 0:04:33

CN3722 MPPT SOLAR CHARGER CONTROLLER MODULE MODIFICATION FROM 3S TO 2S FOR LI-ION BATT CONFIGURATION

DIY charge controller 0:11:10

DIY charge controller for Solar Panel, MPPT Solar charge controller Homemade

Cheap(est?) Lithium MPPT 0:15:05

Cheap(est?) Lithium MPPT Solar Charge Controller CN3722 - 12v Solar Shed

#154 Solar Charger 0:17:33

#154 Solar Charger for Microcontrollers

$7 MPPT CHARGE 0:12:34

$7 MPPT CHARGE CONTROLLER

CN3791 MPPT charger 0:00:25

CN3791 MPPT charger test, MPPT voltage 9V

$50 Powerwerx 300 0:06:51

$50 Powerwerx 300 Watt Solar Charge Controller - Super Compact Budget MPPT Controller!

CN3791. MPPT Зарядка 0:10:05

CN3791. MPPT Зарядка Li-ion от солнечной панели и только

Finally Got My 0:19:10

Finally Got My Solar Chargers Working With My 5V Solar Panel & LiPo Battery

Mini Solar Charger 0:05:04

Mini Solar Charger Control Module for Lithium Battery | CN3065 v1.0 500mA Board | POWER-GEN

Homemade MPPT Solar 0:01:03

Homemade MPPT Solar charge controller simple process mast watch 🧐

Two Buck type 0:06:07

Two Buck type MPPT module setup examples

Victron Energy MPPT 0:07:04

Victron Energy MPPT RS: The Best Solar Charge Controller Money Can Buy

Electronic Basics #29: 0:08:15

Electronic Basics #29: Solar Panel & Charge Controller

Solar charge controller 0:05:34

Solar charge controller testing (CN3722) MPPT boards.

How to Build 0:08:31

How to Build a MPPT Solar Charge Controller to Effectively Charge Lithium Battery using Solar Panel

🔴Probamos un NUEVO 0:04:35

🔴Probamos un NUEVO cargador SOLAR para baterías

CN3791+CAP(16V/1F) OFF 0:02:05

CN3791+CAP(16V/1F) OFF

Комментарии
Автор

CN3791 data sheet states Vin of 4.5V to 28V but only works from 12V & above.

liewts
Автор

I just tested the module, if the battery has a low voltage(mine had 3.6 volts), it will resume charging right away, so indeed, if the battery isn't under a certain voltage threshold it will not resume charging if input drops under the rated "mppt" voltage(9/12v). It will however restart the "charging logic" if input is disconected(0 volts i guess?), did not test any further.

blackbrayn
Автор

I have got the apparently upgraded version. As it turns out, the charger only start charging from 12V and above. Stops charging just below 12V. The D3 connected to pin no.4 "Done" is always on during charge. Really weird. D2 supposedly the Schootky diode in the rectifying circuit lights up as an LED beside D3 when Vin>12V and battery not connected. Hopefully someone can enlighten me.

liewts
Автор

Very useful test. How do you get the IC to start charging again? complete power off or wait more time? Maybe it is just a delay

electronicjo
Автор

Was this using a single Li-ion battery?

ZerVelocityUK