Rolokit WG-YE17-B8B6 30A PWM Solar Charge Controller, 12V/24V LCD, Dual USB

For a solar setup using a 12V or 24V lead-acid battery, the Rolokit WG-YE17-B8B6 provides charge and load control in one compact controller. It automatically adapts to either system voltage and supports OPEN, AGM and GEL batteries. If you want more than basic regulation, the LCD and adjustable settings make it easier to check system status and tailor key battery parameters. Dual USB ports also provide a 5V output for compatible devices.

Worth noting

The 30A PWM controller is designed for lead-acid solar systems, with a 10A discharge current and a maximum solar input below 41V. Its LCD displays system information and lets you adjust settings such as float, discharge stop and reconnect voltage. That gives you a practical way to manage battery cut-off behaviour for the connected load, rather than relying only on fixed defaults. The default discharge stop is 10.7V and the default reconnect voltage is 12.6V, both can be adjusted within their stated ranges.

Built-in overcurrent, short-circuit, reverse-connection and open-circuit protection adds safeguards during system operation. The controller can also retain parameters you have set when the battery runs out, reducing the need to configure them again. Its two USB ports supply 5V/2A maximum for compatible USB devices such as a cell phone or tablet. This is useful when you want basic device charging alongside solar battery management.

For choosing between controller styles, consider whether you need straightforward regulation or want an LCD and configurable battery settings to manage a more tailored setup. This model brings those display and adjustment functions together while supporting automatic 12V/24V detection. It is intended for lead-acid batteries, including OPEN, AGM and GEL types.

Getting the most from it

The LCD gives you a local view of status and data, while adjustable settings let you adapt discharge and reconnect behaviour to the system. Timer setting and multiple load control modes provide further ways to manage connected loads. In a small solar installation, for example, you can use the controller to regulate the battery, set the discharge behaviour and connect a compatible DC load, the USB ports can serve a 5V device at the same time.

The controller’s automatic voltage detection is designed for 12V and 24V systems. For a 12V battery, make sure it has at least 5% charge before connection so the controller can identify the system voltage correctly. The stated battery compatibility is lead-acid only, so select it for a system using an OPEN, AGM or GEL battery.

How to use it

Connect the battery first, then the solar panel, and finally the load. When removing the controller, reverse that sequence: disconnect the load, solar panel and battery. This order supports a clear, practical installation process. Refer to the manual for setup details and parameter adjustments for your system.

Once connected, use the LCD to view system data and select modes or configure available parameters. The controller is rated for a 30A charge current, with a 10A discharge current. Keep the solar input below 41V, and use the USB output for devices that accept 5V. These operating details help you match the controller to the battery, panel and load in your solar arrangement.

Buying verdict

Choose the Rolokit WG-YE17-B8B6 when your solar system uses a 12V or 24V lead-acid battery and you want charge regulation with readable LCD status, adjustable battery settings and USB charging in the same unit. Its automatic voltage adaptation, configurable discharge control and connection sequence make it a practical fit for managing a compatible solar battery system and its connected loads.