It is printed on the body of the tool and on the original supply — and it differs even within one brand, so the brand name is not enough.
The illustration is on this site. Two Braun replacement chargers: one at 12 V, 0.4 A for shavers, one at 5.9 V, 600 mA for clippers. Same brand, two voltages, no interchange.
A supply of the wrong output is not a slow charge. It is a failure.
Third-party replacements exist, and the good ones publish a full compatibility list by model number rather than by brand. The BENSN charger here names around thirty Braun references and states plainly that it is not an original part.
Read the figure on your own tool, match it exactly, and check your model appears on the list.
Check your own manual before you follow anything here. Temperatures, water ratings and supply voltages differ from model to model, and the maker’s own figures take precedence over anything written on this site. A supply of the wrong voltage is a failure rather than a slow charge, and the figure is printed on the tool — not inferred from a connector that happens to fit.
Last reviewed August 22, 2026