How long does it take to charge a Trend Airshield Pro battery?

Trend’s own product pages for the Airshield Pro (AIR/PRO) do not publish a charge-time figure for the AIR/P/4 battery — only the charger’s output spec: 6.4V DC at 500mA (the AIR/P/5/UK and AIR/P/5/EURO chargers are electrically identical, differing only in mains plug — 230V UK 3-pin vs 220V Euro 2-pin). The battery itself is a 3.6V 3-cell Ni-MH pack rated 3.5Ah. For actual runtime, Trend’s own listings disagree with each other: the AIR/P/4 product title calls it an “8 Hour battery,” while the AIR/PRO system’s spec table and description say “6hrs”/“Removable 6-Hour Battery” for the same UK SKU — both are recorded here rather than picked, since neither our records nor Trend’s own page resolve it.

The AIR/PRO can be charged either with the standalone charger or on-board via the AIR/P/5 charger. For an exact charge-time figure, check the instructions supplied with your unit or contact Trend directly — it isn’t stated in the verified product documentation we hold.