Contents
ITECHWORLD 2420 Solar Blanket Kit

Safety Instructions
- Make sure your battery has enough voltage for the controller to recognize the battery type before first installation.
- The battery cable should be as short as possible to minimize power loss.
- This solar regulator is preset to suit lithium lon batteries. (Please set the controller to the correct battery type when using.)
- The charge regulator is only suitable for regulating solar modules.Never connect another charging source to the charge regulator.
- The controller will get hot when it is working, please install the controller on a smooth.well ventilated surface
Product Features
- Built-in industrial micro controller.
- LCD display with adjustable parameters.
- Fully 3-stage PM charge management.
- Built-in short-circuit protection, open-circuit protection, reverse protection, and over-load protection.
- Dual mosfet reverse current protection,low heat production.
LCD Display/Key

menu:switch between different display, or to enter/exit setting by
long press. up: press to increase
value. down: press to decrease value.
System Connection
- Connect your battery to the charge regulator positive+and negative-
- Connect your solar panel to the solar input positive+ an negative-
- Connect your load to the charge regulator positive+ and negative-
- The reverse order applies when deinstalling!
- An improper sequence order can damage the controller

Display/Setting

Attn:
- Press the [down] button to on/off load manually at the main display
- The work mode is working as below:
- [24HILoad output 24 hours
- [1-23H]Load on after sunset and closed after, setting hours
| Trouble Shooting | ||
| Situation | Solution | |
| Charge icon is not on when sunny | The solar panel opened or reversed | Reconnect |
| Load icon off | Mode setting wrong | Set again |
| Battery low | Recharge | |
| Load icon slow
flashing |
Over load | Reduce load watt |
| Load icon fast
flashing |
Short circuit
protection |
Auto reconnect |
| Power off | Battery too low/
Reverse |
Check battery/
Connection |
| Technical Parameter | ||||
| Model | 2420 | 2440 | ||
| System Voltage | 12V/24VAUTO | |||
| Charge Current | 10A | 20A | 30A | 40A |
| Discharge Current | 10A | 20A | 30A | 40A |
| Max Solar Input | <50V | |||
| Default Battery Type | 1B3 (3.2V.4)(12V)(Lithium Lifepo4) | |||
| Float Charge | 14.4V (default, adjustable) | |||
| LVD | 10.4V (default, adjustable) | |||
| LVR | 11.6V (default,adjustable) | |||
| Battery Type | LifePo4 | Gel | ||
| Code | 1b3 | 2b3 | 1b1 | 2b1 |
| Battery Charge | 12V | 24V | 12V | 24V |
| Float Charge | 14.4V | 28.8V | 13.?V | 27.4V |
| Discharge Cut-off voltage | 10.4V | 20.8V | 10.?V | 21.4V |
| Discharge Recovery voltage | 11.6V | 23.2V | 12.6V | 25.2V |
| Constant Voltage | 14.4V | 28.8V | 14.4V | 28.8V |