Frequently Asked Questions

Yes — they are the same class of battery described two ways. A five-cell battery measures about 21V fresh off the charger and settles near 18V under load; one maker prints the higher number, another the working one. The adapter changes neither, so an 18V battery runs a 20V tool and the reverse holds too.

Used as intended, no. Where the battery and the tool are the same class — 18V to 20V, say — the adapter is a direct connection and changes nothing electrically. Where they are not, it contains a DC-DC converter that supplies the voltage the tool expects. Either way it modifies neither part: take the adapter off and both are as they were.

They do. AEG and RIDGID build the monitor and its sensor into the battery itself; other makers put those components in the tool instead. That difference is what the next answer depends on.

No. The adapters carry no charging circuit, and they must never be used with anything that charges a battery — a jobsite radio with a charging cradle, for instance. Take the battery out of the adapter and charge it on the charger made for it.

If your battery has no protection circuit of its own, do not run it flat. Stop at roughly 20% charge. Lithium cells are damaged by deep discharge, and a battery without its own cut-out is relying on you to stop in time.

Each one is tested before it ships and carries a 12-month warranty from the day it is delivered. If something is wrong, write to support@powertoolsadapters.com and we will put it right.

Usually, though the colour or finish can differ. We sometimes ship a functionally identical version made with a different casing material or colour. What arrives always fits the battery and tool pairing you ordered.

No, not when used correctly. A battery wears according to how it is charged, how it is stored and how hard it is worked — not according to what it is plugged into.

The things that matter do: powering the tool, and the battery’s own protection. Brand-specific extras such as Bluetooth tracking or a proprietary fuel gauge may not carry across, because they rely on the battery talking to a tool from the same brand.

No. Slide the adapter onto the tool, clip the battery on, and work. No wiring, no cutting, nothing permanent, and the adapter comes off again whenever you want.

Yes. They are used daily on job sites as well as in home workshops. Each one is built from injection-moulded or 3D-printed ABS with solid copper contacts, and the current it is rated for is listed on its own product page.

Using any third-party accessory may fall outside your tool maker’s warranty, so check their terms. Nothing is modified by fitting an adapter, and it comes straight back off. Our own 12-month warranty on the adapter is separate and is described under Warranty below.

If you already own batteries from one brand and tools from another, an adapter is cheaper than a second battery platform and takes up less space. If you own only one brand, you do not need one.

Where the battery and the tool are the same class — 18V, 19.2V and 20V all describe one class — the adapter is a direct connection and the tool gets exactly what its own battery would give it. Where the voltages differ, a DC-DC converter inside holds the output at the tool’s level, and the current that combination is rated for is listed on its product page. What does affect you is battery size: a small battery on a high-draw tool shortens runtime, not power.

The name is always battery first, tool second. A "DeWalt 20V to Milwaukee 18V" adapter takes a DeWalt battery and fits a Milwaukee tool. So the first brand is what you already own, and the second is what you want to power. The battery adapter finder does this for you, and if you are unsure, email support@powertoolsadapters.com.

Visa, MasterCard, American Express and Discover, plus Shop Pay, Apple Pay and Google Pay. Payment is taken when you place the order. Duties, taxes and import fees are pre-paid by us, so nothing further is owed when the parcel arrives.

We process refunds within 3 days of your return reaching us, back to the card or wallet you paid with. Your bank then usually takes a further 3 to 5 business days to show it. If shipping was charged on the original order, that fee is not refunded — only the returned items are.

Yes, you can check out as a guest. An account is worth having if you would like your order history, addresses and payment details saved for next time, but it is not required.

It is emailed automatically the moment you order. Check your spam or junk folder first — that is where it usually is. If it has not arrived within 24 hours, email support@powertoolsadapters.com in case something went wrong with the order.

Email support@powertoolsadapters.com straight away. There is only a short window between ordering and packing, and inside it we can usually stop the order. After that it ships, and you can return it once it arrives.

Not once it has started being processed. If you need a different quantity or another item, place a second order — and if both are still unpacked, email us and we will try to send them together.

Orders to the United States and the United Kingdom usually arrive in 2 to 5 days, shipped from California or Watford. Everywhere else is typically 5 to 10 days. If an item is not stocked in your region it ships from another of our warehouses, which is also 5 to 10 days.

Free to Canada, the United States, the United Kingdom, Germany, Australia and New Zealand. Paid to the rest of Europe and Japan. Anywhere else, email support@powertoolsadapters.com and we will quote you.

Free to Canada, the United States, the United Kingdom, Germany, Australia and New Zealand — except Hawaii, which is 5 USD. Most of Europe is 3 EUR, and Japan is 300 JPY. Duties and import fees are always pre-paid, so the total at checkout is what you pay.

Yes, every order ships with tracking. If it comes from outside your country you will get two numbers: an international one, and a local one for the carrier making the final delivery.

Yes, for any reason within 14 days of receiving it. Email support@powertoolsadapters.com before sending anything back — the return address depends on where your order shipped from and is often not the sender address on the parcel, and a return sent to the wrong warehouse can be refused. Return postage is yours, in every country. After 14 days we cannot accept a return.

Photograph the problem and email the pictures to support@powertoolsadapters.com with your order number. We will repair or replace it — you will not be asked to pay return postage on a faulty item.

Yes — 12 months from the day your order is delivered, on every adapter, whatever it is made of. It covers manufacturing defects, and we repair or replace at our discretion. It does not cover physical damage, or an adapter that has been opened, modified or tampered with, and it does not extend to the tool or battery the adapter is fitted to.