Queclink GL320MG vs GL520MG vs GL521MG: Which Asset Tracker for UK Fleets?

Queclink's GL range includes some of the most popular battery-powered asset trackers in the UK, and three models come up again and again: the Queclink GL320MG, GL520MG and GL521MG. On paper they look similar — all are LTE Cat M1/NB2 trackers with 2G fallback and nothing to wire in — but they are built for very different jobs. This guide compares the GL320MG vs GL520MG vs GL521MG so you can choose the right one for your fleet or assets.

The quick answer

If you want the longest battery life for static, high-value assets, choose the GL520MG (up to 7-year standby). If you need wireless sensor data or easy reuse, choose the GL521MG (BLE 5.2 and Qi wireless charging). If you need a small, easily concealed tracker for temporary or covert jobs, choose the GL320MG. All three are waterproof or water-resistant and install in seconds — there is nothing to wire.

Queclink GL320MG — compact tracking for temporary and covert jobs

The GL320MG is the smallest of the three at 77.9 × 39.9 × 26.7 mm and just 93 g, with a 2600 mAh battery and a USB Type-C port for charging and configuration. It is rated IPX5 (splash and rain resistant) out of the box, with an optional IP67 waterproof magnetic case for tougher environments. Because it is compact and easy to conceal, Queclink positions it for private investigation, package delivery, endurance events, animal management and temporary vehicle tracking — anywhere you need to fit a tracker fast, use it for a while, then move it on. It reports frequently rather than sitting idle for years, so its battery life depends on how often it checks in.

Queclink GL520MG — up to 7-year battery for static assets

The GL520MG is the endurance champion. Queclink rates it at up to 7-year standby, so it is built to be fitted and forgotten: shipping containers, trailers, generators, plant and other high-value items that sit unpowered for long stretches and only need to report occasionally. It is fully waterproof to IP67, so it copes with weather and outdoor storage. If your priority is to fit it once and get years of location data without touching it, the GL520MG is the Queclink to choose.

Queclink GL521MG — BLE sensors and wireless charging

The GL521MG builds on Queclink's popular GL500MG design and adds two things fleets increasingly ask for: BLE 5.2 for connecting wireless sensors (for example temperature probes for cold-chain loads) and Qi wireless charging so the unit can be topped up and redeployed without cables. It carries a 2400 mAh battery rated at up to one year of standby at one report per day, and it is waterproof to IP67 with a -20°C to +60°C operating range. It is the natural pick when you want more than location alone — sensor data and easy reuse — on assets you cycle through your operation.

GL320MG vs GL520MG vs GL521MG: how to choose

Think about three questions. First, how long must it last untouched? For years on a static asset the GL520MG wins; for a season of frequent reporting the GL320MG; for around a year with sensors the GL521MG. Second, do you need sensor data such as temperature? Only the GL521MG offers BLE for that. Third, how will you recharge and reuse it? The GL521MG's Qi wireless charging makes reuse effortless, while the GL320MG uses USB Type-C. All three skip installation entirely — there is nothing to wire, which is the whole appeal of the GL range.

Frequently asked questions

Which Queclink asset tracker has the longest battery life?

The GL520MG has the longest standby life, rated up to 7 years. It is designed for static, high-value assets that report infrequently, such as containers, trailers and plant left unpowered for long periods.

What is the difference between the GL520MG and GL521MG?

The GL520MG is optimised for the longest battery life (up to 7 years) on static assets. The GL521MG trades some battery life (about one year at one report per day) for BLE 5.2 wireless sensor support and Qi wireless charging, which makes it better for cold-chain monitoring and reusable deployments.

Is the Queclink GL320MG waterproof?

The GL320MG is IPX5 water-resistant, so it withstands splashes and rain but is not fully waterproof. An optional IP67 waterproof magnetic case is available for harsher outdoor or under-vehicle use.

Do Queclink GL asset trackers work with driver ID keypads?

No. The GL range is battery-powered asset trackers without a wired keypad port. For driver identification you need a hardwired vehicle tracker paired with a driver ID keypad — tell us your use case and we will match the right combination.

Which Queclink tracker is best for covert or temporary vehicle tracking?

The compact GL320MG is best for temporary or covert tracking. At 93 g it is small and easy to conceal, reports frequently, and suits short-term jobs like deliveries, hire vehicles and investigations.

Buy Queclink asset trackers in the UK

As an official UK Queclink distributor, we hold the GL range in UK stock and ship worldwide. Compare the GL520MG and GL521MG on our site, browse the full Queclink range or all our asset trackers. Want the compact GL320MG? It is not on the site yet — get in touch and we will quote it.