Four things: output voltage, current, your exact model on the compatibility list, and whether the seller says it is not an original part.
Output voltage. It must match the figure printed on your tool exactly.
Current. It should meet or exceed what the tool asks for.
The model list. A good third-party listing names references by number. The BENSN on this site names around thirty Braun models; the MEROM names four and states in writing that it fits nothing else.
The disclosure. BENSN states plainly that it is not an original Braun product. That tells you the compatibility list is the seller’s claim rather than the manufacturer’s, which is worth knowing.
A listing that gives a brand and no output figure gives you nothing to check.
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 October 12, 2026