Volts, amps, and the model number on the label

The best replacement chargers and power supplies for 2026

The family that keeps a working tool working, and the one where the wrong part does damage. Grooming tools take a published output voltage, and a supply that does not match it is not a slow charge, it is a failure — a figure printed on the original adapter and in the manual. How to read input and output takes a minute, what output voltage your tool needs sets out the rule, and are third-party chargers safe says what you accept with a part that is not original. The two supplies compared here are both third-party replacements, both say so in their own listings, and both publish the pair of figures that decides the purchase: 12 V at 0.4 A for the shaver line, 5.9 V at 600 mA for the clippers. Each also names the Braun references it fits — around thirty for one, exactly four for the other — which is what the model number stamped on the appliance is for.

By Jean-Benoit Buisson

What we recommend

BENSN 12 V replacement charger

A replacement charger for Braun shavers, 100–240 V in and 12 V 0.4 A out, with around thirty compatible Braun references listed by number — the older Series 3 3040S among them. The seller states it is not an original Braun part.

Input
100–240 V, 50–60 Hz
Output
12 V, 0.4 A
Compatible with
190, 190S, 340S, 3020S, 3000S, 3080S, 3040S, 370, 370CC, 390CC, 5190CC, 7865CC, 760CC, 790CC, 9290CC and around fifteen more, per the seller
Origin
Not an original Braun product, stated by the seller
Amazon reference
B07KR4SSKQ (identical on 6 markets)
EAN
0725756302696
- The output voltage and current are both published — the two figures that decide whether a charger is safe for the device
- Around thirty compatible references listed by number, including the 3040S, which is not the Series 3+ 3040si reviewed on this site: the list does not name it
- A third-party power supply on a device whose original is still sold
Best for: A Braun shaver whose original charger has been lost, where the model number is on the list.

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MEROM 5.9 V charger for Braun clippers

A replacement charger for four Braun clipper references, 100–240 V in and 5.9 V 600 mA out, with the listing stating explicitly that it is compatible only with the models named.

Input
100–240 V
Output
5.9 V, 600 mA
Compatible with
Braun HC5090, HC5050, HC5030, HC5010
Stated limit
Compatible only with the products listed above, per the seller
Amazon reference
B0B81XQ7MG (identical on 5 markets)
EAN
0768481995658
- Both output figures published, and a compatibility list of exactly four references
- The listing states in writing that it fits nothing beyond those four — a limit most sellers leave unstated
- None of the four listed clippers is reviewed on this site, so nothing here links to it
Best for: A Braun HC5010, HC5030, HC5050 or HC5090, and nothing else.

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Choosing within charging & power, by need

Replacing a 12 V Braun shaver supply

The figure printed under the appliance is the whole decision. This one delivers 12 V at 0.4 A and names around thirty Braun shaver references by number, the 3040S among them.

BENSN 12 V replacement charger

Replacing a 5.9 V Braun clipper supply

Braun's clipper line runs at 5.9 V, not at the 12 V of the shavers. This one delivers 5.9 V at 600 mA, and the listing states it fits the four references it names and nothing else.

MEROM 5.9 V charger for Braun clippers

Charging & power and who each one is for

A lost or failed power supply: The reason this family exists: a proprietary pack goes astray or fails, and a sound appliance becomes unusable. Both supplies here are sold as replacements.
Reading the model number first: Neither supply is universal. One names around thirty Braun references, the other four. The number stamped on the appliance decides which of the two you need.
Buying a third-party part knowingly: Neither is an original Braun part, and both listings say so. Worth deciding with the maker's own price in front of you, warranty included.

The trade-offs of charging & power

A long compatibility list or a short one: The 12 V unit names around thirty references, the 5.9 V unit four. A short list that names your model is worth more than a long one that does not.
Output voltage against current: The voltage has to match exactly: 5.9 V and 12 V are not interchangeable. The current may be higher than the appliance needs, since it draws what it draws.
A third-party supply or the original: A third-party supply has to publish the same output and at least the same current. Both of these publish the two figures; many listings publish neither.

What keeps coming up about charging & power

Can I use any charger?

No. The output voltage has to be identical and the current at least equal. The two supplies on this page are 5.9 V and 12 V, and they are not interchangeable.

Will a 12 V charger work on a 5.9 V clipper?

No, and it is the mistake that does damage rather than simply failing. The 12 V unit is for the shaver line, the 5.9 V unit for the clipper line.

Where is the voltage written?

On the old pack and under the appliance, in small type. Input and output are both printed: the output figure is the one that has to match.

Can the appliance be left charging permanently?

Modern appliances manage the end of charge. Leaving a very old appliance with no charge regulation plugged in permanently is less advisable.

Do these supplies work abroad?

Both accept 100-240 V at the wall, so abroad they need the shape of the pins changed and nothing more. An appliance with a single input figure is a different case, and a plug adapter will not help it.

Can I charge in the bathroom?

The low-voltage end is made for it; the mains pack is not. Keep the pack away from the basin and never plug it in beside water.

Why does my appliance no longer charge?

Dirty contacts, a cable broken where it leaves the pack, or a battery at the end of its life. Clean the contacts before concluding anything.

Does a replacement charger charge more slowly?

It charges at the current it delivers, which is often below the original supply. That makes the charge longer, not poorer, as long as the output voltage is exact.

How do I make the battery last?

Avoid leaving it completely flat for months. Lithium cells do not need discharging before being recharged.

In short, on charging & power

The output voltage has to be identical and the current at least equal: an approximate supply can destroy the board rather than merely charge badly. Both figures are printed on the old pack and under the appliance, and the two supplies here are 5.9 V for the clipper line and 12 V for the shavers. An appliance that has stopped charging often has nothing worse than dirty contacts.