Power type affects convenience, storage and maintenance. Rechargeable products reduce the need for replacement batteries, while battery-powered products can be useful when charging is not convenient.
Rechargeable products
Check the charging connection, approximate charging time and whether a cable is included. Use only the supplied or manufacturer-approved cable and power source. Keep charging points dry and stop charging if the battery swells, leaks or becomes unusually hot.
Replaceable batteries
Confirm the battery size and whether batteries are included. Remove batteries before long-term storage when the instructions recommend it, and never mix old and new batteries or different battery types.
Choose for your routine
Consider where the product will be stored, how often it will be used and whether replacement batteries are easy to obtain. The product page and packaging should take priority over general guidance.