Newpower is a Duracell Energy approved installer

Rotherham, 27 October 2025. Newpower Advanced Ltd has been certified as a Duracell Energy approved installer, which means we can supply, fit and support Duracell's home battery range.

The unit that matters most for ordinary houses is the Dura5, a 5.12 kWh module that stacks if you need more. It is now the battery we quote on most solar jobs, and it sits alongside the Powerwall 3 and the rest of the range on the battery storage page.

What is a Duracell home battery?

Duracell Energy is the home storage arm of a brand most people already know from the back of a torch. The home battery range is a different product to anything in a packet, but the reason customers ask for it is the same: it is a name they recognise and expect to still exist in ten years.

The Dura5 is a wall or floor-mounted module rated at 5.12 kWh. Modules stack, so a household that starts with one and later finds it is emptying the battery every evening can add another rather than replace the lot. It charges from surplus solar during the day and from a cheap overnight tariff if you are on one, and it discharges into the house in the evening when grid electricity is dearest.

Full specifications are on the Duracell Energy battery page.

What does being a Duracell Energy approved installer actually mean?

Three practical things, and they are worth spelling out because the word "approved" gets used loosely in this trade.

Our engineers have been trained by Duracell Energy on designing, installing and commissioning the range, rather than reading the manual on the day. We can supply the hardware directly, which means stock and lead times we can actually promise. And the manufacturer warranty is registered by us at commissioning, so if something goes wrong in year seven there is a named installer and a registered serial number behind the claim.

That last point is the one people underestimate. A battery is a ten-year-plus purchase, and the quality of the warranty is mostly about whether anyone will pick up the phone.

What does a Duracell solar battery price look like?

Fitted with a new solar system, solar with a 5.12 kWh battery starts from £9,000 on our typical 4.8 kWp system of ten panels. A smaller system with a compact battery starts from £6,995. Both are package prices for a straightforward job, with the battery, the panels, scaffold and certificates all inside them.

Adding a battery to an existing solar system is priced separately, because it depends entirely on what is already there: the age and type of your inverter, whether the battery can be DC coupled or needs its own inverter, where it is going and how far that is from the consumer unit. A battery in the garage with a long run back to the house is a different job from one on the wall next to the board.

Battery storage in a home has been zero-rated for VAT since February 2024, on its own or with solar, and that zero rate runs to 31 March 2027.

Who should actually buy a 5.12 kWh battery?

Here is where I will give you my own view rather than the press release version.

A 5.12 kWh battery suits a household that is out during the day and home in the evening. The solar fills it while nobody is in, and the house runs off it from six until bedtime. That is the commonest shape of family life and it is why we start most quotes at that size.

If you are retired or work from home and use the power as it is made, there is far less surplus to store, and most of the time you would get more from spending the same money on extra panels. I have taken over jobs where somebody had been sold four times the storage they could ever fill, and no amount of app screens makes that money back.

If you are on a time-of-use tariff, the maths changes again, because the battery earns money by filling overnight on cheap units whether the sun shines or not. That is the case where a bigger stack starts to make sense.

The honest test is your own consumption between six in the evening and midnight. If that is under five units, one module is plenty.

Can it be added to solar I already have?

Yes, including systems we did not fit.

We check the existing installation for safety first: the inverter, the isolators, the cable sizes and the consumer unit. An AC coupled battery has its own inverter and works alongside almost any age and brand of solar. A DC coupled battery is neater and slightly more efficient but needs a compatible hybrid inverter, which older systems usually do not have.

Either way the work is notified to the network operator that owns the wires in your street, and you get an updated electrical installation certificate.

How the install runs

A survey first, to look at where the battery goes, the run back to the consumer unit and the ventilation. Batteries are heavy and they want a solid wall or floor, somewhere that does not freeze and does not bake.

Fitting is usually a day for a battery on its own, alongside the solar install where the two go in together. Then commissioning, the app on your phone, and the paperwork: the electrical certificate, the network notification and the warranty registration.

Newpower's accreditations

MCS certified installer NAP-75287, TrustMark registered 3658638, RECC member 00078420, REFCOM REF1023574 for refrigerant work, and rated 4.7 on Trustpilot.

Those numbers are all checkable, and we would rather you checked them than took our word for it.

Newpower is a Tesla Energy Certified Installer covers the Powerwall 3 end of the range, and what solar panels cost in 2026 has the full price ladder.

To find out which size actually suits your evenings, Get a quote with your postcode and a rough idea of your usage, or ring 01709 278248.