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Home or shop with mains power · 12V

Home Backup Kit

When the mains goes off, lights, fans, fridge, Wi-Fi, TV and CCTV carry on by themselves for around 6 hours, then it recharges from the mains.

Homes and shops that want everything to keep running smoothly, whatever the weather.

฿81,359

฿87,054 incl. 7% VAT

Kit price, excl. 7% VAT (added at checkout). Free delivery in Thailand on this kit.

Ask an engineer about this kit

An engineer checks every system before it leaves Trang. If anything needs changing for your place, we'll message you first.

✓ Genuine Fullriver, KISAE and Merlin
✓ Delivered by road and ferry, islands included
✓ Manufacturer's warranty on every part; we handle any claim from Trang
✓ Pay by bank transfer, card or PayPal
✓ Support in Thai and English on LINE
✓ 30-day returns on unused, uninstalled items; special-order parts are returnable only if faulty · Returns and warranty

What it runs

✓ Fridge✓ Fans✓ Lights✓ Wi-Fi✓ TV✓ CCTV

What that adds up to

LED lights × 6	60 W
Fans × 3	150 W
Fridge	about 40 W on average, 100 W running
Wi-Fi router	10 W
TV	60 W
CCTV, 4 cameras and recorder	40 W

With everything on, that is about 360 W on the fridge's average, and 420 W while its compressor is running. Not everything runs all the time, so the kit is designed on a 300 W average: 1.8 kWh over a six-hour cut, about half of the 3.8 kWh the bank stores, which is what keeps the batteries healthy.

The most it can give, using the full usable bank

150 W: lights, Wi-Fi, CCTV and a fan	about 18 hours
250 W: add the fridge and TV	about 11 hours
300 W: the design average	about 9 hours
360 W: everything on the list	about 7½ hours
500 W	about 5½ hours

Plan around the six hours: that uses about half the bank and leaves the rest in reserve. The table shows the longest it can run if you need it to: 3.8 kWh stored, Fullriver's 80% depth of discharge and about 90% inverter efficiency. The inverter gives 1,000 W continuous, so this kit is for the essentials rather than air-conditioning, kettles, water heaters or induction hobs; for those, the finder sizes a larger system.

Based on a full battery and typical Thai appliance wattages. Real run-times vary with use and weather.

Everything in the box

2×Fullriver DC160-12 deep-cycle battery, 12V 160AhIn stock฿42,598
1×KISAE IC1210 1000W inverter-charger, 40A charger, 12VSpecial order฿18,326
1×KISAE DC cable and fuse set, AWG#4Special order฿3,112
1×Merlin AC consumer unit with RCD protectionSpecial order฿10,304
1×Merlin SmartGauge battery monitor, 12/24VSpecial order฿6,293
1×KISAE BTS-10K battery temperature sensorIn stock฿726

Batteries are in stock in Trang. Parts marked “special order” are brought in for your kit; ask on LINE and we'll confirm the dispatch date before you order. Once everything is in hand, orders leave Trang within 1–2 working days.

Datasheets and manuals for every part

Fullriver DC160-12 deep-cycle battery, 12V 160Ah — part page
KISAE IC1210 1000W inverter-charger, 40A charger, 12V — datasheet (PDF) · part page
KISAE DC cable and fuse set, AWG#4 — part page
Merlin AC consumer unit with RCD protection — part page
Merlin SmartGauge battery monitor, 12/24V — part page
KISAE BTS-10K battery temperature sensor — part page

What you add

A licensed electrician to move your essential circuits onto the new board
No solar panels needed (add them later if you like)

Need help with panels, mounting or an electrician? Ask us on LINE

At a glance

System voltage	12V
Battery bank	2 × DC160 → 12V 320Ah
Energy stored	3.8 kWh
Designed daily use	1.8 kWh
Inverter, continuous	1,000 W, 230V
Switchover when the mains fails	automatic, under 30 ms
Mains charger	up to 40 A, multi-stage, with battery temperature sensor
Recharge after a 6-hour cut	about 5 hours
Inverter, surge	2,000 W
Batteries	sealed AGM, maintenance-free and non-spillable
Solar panels to add	none needed
Datasheets and manuals	Listed under the parts above

Need longer cover or more power? The finder sizes a larger backup system from what you want to keep running, or send your list on LINE.

Why this size? The numbers

The loads listed use about 1.8 kWh a day. The battery bank is 2 × Fullriver DC160, giving 12V and 320Ah (3.8 kWh stored), so a normal day uses around half of it or less, which is what keeps deep-cycle batteries healthy for years. The inverter is rated 1000W continuous, with surge headroom for the motors on this kit's list to start.

Installation

Fit it yourself, with your electrician, or with us.

Small kits are simple to fit with our wiring guidance. Anything connected to house wiring should be connected by a licensed electrician. For large battery banks, our team can deliver and install the bank for you.

Installation options →

Questions

Good to know

How fast does it take over when the mains goes off?

By itself, in under 30 milliseconds (the transfer time in KISAE's manual for the inverter-charger in this kit), so the fridge, Wi-Fi and TV carry on.

How long does it take to recharge?

When the mains comes back the built-in charger refills the bank at up to 40 A, about 40 Ah an hour. After a cut of around 6 hours that is roughly five hours, and it happens by itself.

Does it need solar panels?

No. It charges from the mains. Panels and a charge controller can be added later if you want the sun to share the work.

Can I have a bigger one?

Yes. Tell the finder what you want to keep running and for how long, or send your list on LINE, and an engineer sizes a larger bank and inverter-charger for you, free.

Can I add more batteries or panels later?

Yes. Add batteries of the same model while the bank is still young, and add panels up to what the charge controller can take. Tell us what you'd like to add and we'll check it fits.

Can it run air-conditioning?

The Resort Villa Kit is sized for a 9,000 BTU inverter air-con for a few hours each evening. The other kits are sized for lights, fans, a fridge and everyday appliances. For air-con, the finder will size a system around it.

How is it delivered to an island?

By road to the pier and on by ferry. Batteries are packed for the journey, and we agree the ferry and pier with you on LINE before dispatch.

Do I need an electrician?

For anything connected to your house wiring, yes, please use a licensed electrician. Small stand-alone kits are straightforward with our wiring guidance, and for large battery banks our team can install for you.

How long will the batteries last?

Fullriver deep-cycle batteries last longest when used to about half each day and kept in a shaded, ventilated place. Our kits are sized to do exactly that.

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