Phone battery in the warehouse: practical tips

A counting shift can run to eight hours, yet a phone battery drains much faster in working mode, because the camera, screen and signal all run together. A phone with a flat battery stops a whole zone and, at worst, the latest entries can be lost. Below: what drains the battery most, how to set the phone up, what to do in cold and heat and how to build a charging plan for the shift.

What drains the battery most

A few things use up most of the charge:

• Screen. The biggest drain, especially at high brightness and a high refresh rate (90 or 120 Hz).
• Camera and torch. Reading codes keeps the camera almost constantly busy, and a lit torch sharply raises consumption.
• Searching for signal. Between metal racks and in a basement the signal is weak, so the phone boosts its radio to find it and the charge falls faster.
• Background apps, location, Bluetooth and notifications.

Setting up the phone

A few minutes of set-up add hours to a shift:

• Set brightness to medium. Auto brightness is convenient; just make sure the screen is clear when reading a code.
• Set the screen to switch off after thirty seconds to a minute.
• If possible, lower the refresh rate to the standard 60 Hz.
• Turn off location, Bluetooth and NFC when they are not needed.
• Close other apps and silence notifications with "do not disturb".
• Switch on battery saver, but test it first with the counting software, since on some phones it limits background work.
• Where there is no signal at all and the software works offline, airplane mode stops the search for a signal.

Cold and heat

In the cold a battery temporarily loses capacity, and a phone can switch off suddenly even at 30 percent. If you work in a cold room or outdoors in winter, tuck the phone under your jacket between uses so it stays warm. Do not put a chilled phone on charge; warm it up first.

Heat is a problem too. In summer the air under a warehouse roof gets very hot, and an overheated phone slows its camera, drains faster and may shut down by itself. Do not leave a phone in the sun or by a windscreen, take off a thick case on hot days and let the device rest in the shade.

A charging plan for the shift

Measure beforehand how long your phone lasts. Charge it fully, work for an hour in normal counting mode and note how many percent it lost. Say 18 percent went in an hour. Leaving a 20 percent reserve, the phone works for about four and a half hours. So an eight-hour shift needs at least one charging break or a spare phone.

A power bank helps as well. A ten-thousand mAh bank usually charges a phone once or twice in practice, because some energy is lost in charging. Carried in a pocket and topping up the phone while it works, it can remove the need for breaks, as long as the cable does not get in the way.

Charging point and spares

• Put a multi-socket charging point in each zone or at the warehouse entrance.
• Use identical, good-quality cables and adapters: a cheap cable charges slowly and wears out fast.
• The "20 percent rule": when charge drops to that level, the phone goes on charge and a spare is taken into use.
• The evening before the count, charge every phone fully; in the morning, note each phone's charge on the list.
• At lunch, plug in all the phones.
• For every eight to ten counters, keep one spare phone ready: charged and already signed in.

Fast charging helps too: on many phones half an hour adds a lot, so if the break is at least thirty minutes, build it into the plan. You need an adapter that supports fast charging and a matching cable.

One more point: if a phone suddenly dies from a flat battery, was the last entry saved? Test this before the count: enter a few entries, force the phone off, switch it on again and make sure the entries are still there.

Conclusion

Charge, cables and a spare phone look like small things, but they are what stops a count. Think them through in advance and the shift passes calmly. If preparing the devices and watching over them is an extra burden, order a count from StockCheck: the team arrives with its own equipment and hands over the result as Excel or PDF.