SRNE Shiner 12V/24V MPPT Solar Charge Controller with Bluetooth 30A

The srne shiner 12v/24v is an MPPT solar charge controller that the listing describes for home, RV and off-grid solar systems. It is aimed at Bangladeshi households and small off-grid setups that want to charge batteries from solar panels. The listing says it supports 12V/24V auto recognition and both lead acid and lithium batteries.

• Overview
• Key features
• Specifications
• How to use / set up
• Compatibility and what is in the box
• Who should buy it in Bangladesh
• Alternatives in our store
• Warranty and support
• Delivery, returns and ordering
• Frequently asked questions

Overview of the srne shiner 12v/24v for Bangladeshi solar buyers

The srne shiner 12v/24v is a solar charge controller, the unit that sits between your solar panels and your battery and manages how the battery is charged. According to the listing, it is designed to optimise energy harvest from solar panels using MPPT (Maximum Power Point Tracking) technology. The maker lists up to 99% tracking efficiency and faster charging compared to PWM controllers. This page reports those figures as listed claims.

For a Bangladeshi home, the practical question is whether this type of controller suits your panel array and battery bank. The listing describes the srne shiner 12v/24v for home, RV and off-grid solar systems, and says it supports both lead acid and lithium batteries. Load-shedding is a daily reality for many households, so some families look at solar with batteries as backup, and the controller decides how that battery is charged. Before you choose the srne shiner 12v/24v, confirm your battery chemistry, because the listing notes that charging profiles differ between lead acid and lithium.

The listing mentions an intuitive LCD display and a maximum PV input voltage of up to 60V (VOC). The product name gives the rating as 30A. The short description refers to a 20A / 30A / 40A series, and one passage of the listing text refers to a 20A model. Check the rating against your system before you order the srne shiner 12v/24v, and ask us if the model is unclear to you.

The listing calls the controller a new generation MPPT model. If you plan to grow your system later, review panel voltage and total array size before you buy, because the controller has to suit the whole array rather than only the first panel. Keep a written record of your system layout, so that the next electrician who visits can work from it. A clear record also helps when you compare the srne shiner 12v/24v with other options.

Key features

Automatic 12V and 24V voltage detection

The listing says the controller automatically senses battery voltage and recognises 12V or 24V systems, so there is less manual setup at installation. That is useful if you are still deciding on the size of your battery bank, because the same controller is listed for both voltages. The srne shiner 12v/24v is listed with auto recognition, which lets you focus on wiring, panel layout and battery choice. Check your battery bank voltage before you connect anything, and follow the maker’s instructions for the connection order.

Bluetooth monitoring with a mobile app

According to the listing, an external module called BT-2 lets you monitor system status from your phone. The listing names battery voltage, charging current and PV input among the readings you can view, which makes checking and adjusting the system easier. The Bluetooth link is presented as an external module, so treat the module as a separate part of the monitoring setup. The listing does not say whether BT-2 comes with the product, so ask us before you buy if the app is part of your plan for the srne shiner 12v/24v.

Lead acid and lithium battery support

The listing states that the controller supports both lead acid and lithium batteries. It also explains that charging profiles differ, which is why battery type matters for how the system charges. Before installation, read the battery documentation to identify the chemistry, then set the controller to match by following the maker’s instructions. The srne shiner 12v/24v manages the flow of charge into the battery rather than storing energy itself, so the battery and the controller have to agree. Getting this match right is the step most worth checking before you wire the system.

MPPT tracking and charging efficiency

MPPT, or Maximum Power Point Tracking, is the technology the listing names for this controller. The listing says the tracker adjusts the panel input to maximise power output under varying sunlight, and it lists up to 99% tracking efficiency. According to the listing, this gives faster charging than PWM controllers. These are the maker’s listed figures, and this page reports them as listed claims. For a home system, the tracker’s adjustment matters when light levels change through the day, which is common during Bangladesh’s changing seasons. Ask an electrician how the srne shiner 12v/24v suits your panel layout.

Protection features for the battery and system

The listing names overcharge, over-discharge, short-circuit and reverse polarity protection. It also lists temperature protection that reduces charging if the unit gets too hot, over-voltage protection and current limitation. According to the listing, the controller protects against the battery hanging at low voltage. These protections are features the maker lists, and they do not replace careful wiring. Install the srne shiner 12v/24v with the connections set out in the maker’s instructions, and check them again after the first charging day.

Load output and load control

The listing says the controller has a flexible load output and can support load control, with loads switched on or off by time or by a light sensor. That can suit a lighting circuit that should run at set hours, for example in a small shop or a home office. The listing presents this as a feature of the controller, so check that your load and wiring match the maker’s instructions. Set up load control only after you have checked the battery voltage. The listing gives no detailed setup steps, so follow the maker’s guidance for the srne shiner 12v/24v.

Specifications

The table below sets out the srne shiner 12v/24v specifications as they appear in the product listing.

These are listed specifications from the product listing.

How to use / set up

Start by reading the maker’s instructions in full before you connect anything. Charge the battery fully before first use, then follow the maker’s instructions for connecting the panels, battery and any load, in the order they describe. Working slowly at this stage saves time and reduces the chance of a wrong connection.

Plan the system on paper first. Note your panel voltage and current, your battery voltage and your battery chemistry. The listing gives a maximum PV input voltage of up to 60V (VOC), so compare your panel open-circuit voltage with that figure before you fix any cable for the srne shiner 12v/24v. Keep the array within the listed maximum at all times, including when you add panels later.

Set the system voltage next. The listing says the srne shiner 12v/24v recognises 12V or 24V automatically, so make sure your battery bank is wired at the voltage you intend to run before you power up. Mixing battery voltages in one bank is a common mistake, so double-check the bank wiring against your plan.

If you have the BT-2 module, pair it after the controller is installed, following the maker’s instructions. Once paired, use the mobile app to check the readings the listing describes, such as battery voltage, charging current and PV input. Watch these readings for a day or two so you know what normal looks like for your system, and note anything that changes.

Set the battery type to match your battery before you rely on the charging. Lead acid and lithium batteries need different charging profiles, and for the srne shiner 12v/24v the battery type matters for every charging cycle. If you change battery type later, review the setting again before you rely on the system.

Care and storage matter too. Keep the controller in a dry, ventilated place, away from direct sun, and keep cable joints clean and tight. In Bangladesh’s humid months, check connections more often, because damp can affect terminals over time. Avoid covering the unit in a way that blocks air flow, and follow the maker’s instructions for any cleaning.

Keep a written record of the wiring, the battery type and the settings you chose, so that anyone who services the system later can see what was done. Check the connections after the first charging day, and again after any power interruption.

If you are not confident with panel wiring, ask a licensed electrician to install the system. In a Dhaka flat or a rooftop installation, the cable route and safe mounting matter as much as the controller itself, so plan those before the parts arrive.

Compatibility and what is in the box

The listing confirms these compatibility points for the srne shiner 12v/24v: automatic 12V or 24V battery voltage recognition, support for lead acid and lithium batteries, and use in home, RV and off-grid solar systems. Compatibility also depends on your panels, battery bank and wiring, which the listing does not describe in detail, so check those parts against the maker’s guidance.

The listing does not confirm whether the BT-2 module is included with the product. It also does not give a Bluetooth version, so do not assume one. If the module matters to your plan, ask us before you order, and ask us about any other accessory you expect to need.

The listing does not state what is in the box, so the package contents are not confirmed. Please ask us about the contents before you order the srne shiner 12v/24v, and compare them with your installation list.

For background reading on a different kind of controller, see the Wikipedia article on gamepads. That article does not describe this solar product.

Who should buy it in Bangladesh

A household with a rooftop solar panel and a battery bank is the most direct fit. If your home uses a battery for backup during load-shedding, a controller that manages charging for 12V or 24V batteries and supports lithium chemistry is worth a look. Your electrician should check the array size before you commit to the srne shiner 12v/24v.

A family in a Dhaka flat with a small balcony panel may ask whether a controller of this type is too much for the setup. Ask an electrician to confirm the array and battery sizes first. The listing names home use, but it does not give a system size range, so do not assume a fit from the name alone.

An RV or van owner who travels across the country may want a controller listed for RV use. The listing names RV systems, so the srne shiner 12v/24v is in scope for that use. Check that your battery bank and panel layout match the controller before you buy, and secure the wiring so it stays in place on rough roads.

Off-grid homes and small cabins, such as a rural house or a riverside shelter, may use the controller as the core of a battery system. The listing names off-grid systems as a suitable use. A home with no grid connection needs careful planning for battery capacity and load, and the listing does not provide those figures.

Small shop owners who want load control for lighting at set hours may find the load output options useful. The listing mentions time and light-sensor control. Load control on the srne shiner 12v/24v is listed, but the listing gives no setup steps, so ask an electrician to check the load wiring.

Owners of an existing solar set-up who are replacing an older controller may want to compare the listed features with what they have now. The listing highlights MPPT tracking, auto voltage detection and battery type support. Write down your current panel, battery and load details, and check them against the listing before you decide.

Buyers who are new to solar should read the setup section and the questions below before ordering, and should be ready to ask an electrician for installation help. A controller is only one part of a working system, and the panels, battery and wiring all need to match.

Alternatives in our store

If you are weighing the srne shiner 12v/24v against a similar option, look at SRNE Shiner 12V/24V MPPT Solar Charge Controller with Bluetooth 20A, which is another solar charge controller in our range. You can also browse all of our Solar & Electrical products to compare other items in the same category.

For the wiring side, see YRO 30A 1000V Solar Connector for PV Systems, which is another solar connector in our range. If you are also planning a battery, see GearUP 12V 100Ah LifePO4 Lithium Battery with Smart BMS + Bluetooth, another lithium battery in our range.

For checking voltage during installation, see Non-Contact Voltage Tester 12-1000V Digital Voltage Tester (Mestek AC40), another electrical testing tool in our range. Use the category page to compare more options before you decide.

Warranty and support

Warranty: 1 Year seller warranty.

Delivery, returns and ordering

We deliver all over Bangladesh and you pay cash on delivery. Delivery usually takes 1–3 days inside Dhaka city and 2–5 days outside Dhaka. Ordering the srne shiner 12v/24v follows the same steps as any product in our range.

You can return it within 7 days of delivery (see our Delivery & Returns policy). Questions before ordering: call 09638054751, message us on Facebook Messenger or email care@gadgetsuperb.com.

Full details are on our Delivery & Returns policy page. Read it before you place your order, especially if the controller needs to fit a specific system.

Frequently asked questions

Is the srne shiner 12v/24v suitable for both 12V and 24V systems?

Yes, according to the listing it supports 12V/24V auto recognition, so it senses the battery voltage. Check your battery bank voltage before you connect it.

Does the srne shiner 12v/24v work with lithium batteries?

Yes, the listing says it supports both lead acid and lithium batteries. Set the battery type to match your battery, following the maker’s instructions.

How do I monitor the srne shiner 12v/24v from my phone?

The listing says an external BT-2 module with a mobile app shows system status, battery voltage, charging current and PV input. Ask us whether BT-2 comes with your order before you buy.

Is the srne shiner 12v/24v an MPPT controller?

Yes, the listing describes the srne shiner 12v/24v as an MPPT solar charge controller with up to 99% tracking efficiency, according to the listing.

What is the maximum PV input voltage of the srne shiner 12v/24v?

The listing gives a PV max input voltage of up to 60V (VOC). Compare your panel open-circuit voltage with that figure before you connect the panels.

Which protection features does the srne shiner 12v/24v have?

The listing names overcharge, over-discharge, short-circuit and reverse polarity protection, along with temperature and over-voltage protection.

Is the rating 20A or 30A for the srne shiner 12v/24v?

The product name says 30A, while the listing’s short description refers to a 20A / 30A / 40A series. Confirm the model and rating before you order, or ask us.

Can I pay cash on delivery for the srne shiner 12v/24v?

Yes, we deliver all over Bangladesh and you pay cash on delivery.

How long does delivery of the srne shiner 12v/24v take?

For the srne shiner 12v/24v, delivery usually takes 1–3 days inside Dhaka city and 2–5 days outside Dhaka.

Can I return the srne shiner 12v/24v if it does not suit my system?

Yes, you can return it within 7 days of delivery. See our delivery and returns policy for the full terms.

Does the srne shiner 12v/24v suit RV and off-grid systems?

The listing names home, RV and off-grid solar systems as suitable uses. Check your panel and battery layout against the controller before you order.

Who can I ask before I order?

Call 09638054751, message us on Facebook Messenger or email care@gadgetsuperb.com with questions about the srne shiner 12v/24v before you order.