There’s an Eco mode for charging more slowly, which increases battery life. Although in the latter case, you may be better opting for batteries with more capacity. Design and Charges It’s common to see NiMH rechargeable batteries that have a total life of around 500 charge cycles. That’s good, as one battery replaces 500 alkaline batteries; but the GP ReCyko Pro 2000mAh AA go further. These batteries have a lifetime of 1500 cycles: that’s more than double the GP ReCyko Charge 10 (when slow-charged). Next, I measured the capacity of the batteries using a high-drain test (600mA +/-20%, with a cut-off voltage of 0.94V). Initially, the charge was 2795mAh, which is a good deal higher than the rated capacity of the batteries. Although the charger is nominally for the Charge 10 batteries, it’s also capable of charging any AA or AAA NiMH rechargeables, so you can use it with any current (or future) rechargeable units you buy. Capacity is rated at just 1700mAh, although we found that they managed 2045mAh when slow charged, a chunk above that rated capacity. On a fast charge, power was 1769mAh.

With a starting voltage of 1.4V, these batteries were above the lower limit of 1.2V for rechargeable batteries. Capacity is decent. Rated at 2000mAh, we found that these batteries managed an initial result of 2218mAh, and that didn’t change over the full 50 cycles that we put the batteries through. That’s enough power to take on the most powerful jobs, although if you really need more power, the Ansmann Digital AA HR6 2850mAh may be better. Fact: 61% of UK consumers have a battery charger at home that can be used with these new generation rechargeable batteries. It used to be that rechargeable batteries suffered from high battery drain, losing a considerable amount of power while sat idle, which made them unsuitable for many jobs. For example, in remote controls, rechargeable batteries would run out of power at more regular intervals than standard disposable batteries, making them an annoying choice. However, improvements in technology now mean that there are rechargeables that can compete with alkaline models for longevity. Built on innovative charging technology, it can recharge batteries in just 10 minutes*! But the charger is only half the story. The magic lies in the combination of both Charge 10 charger and Charge 10 rechargeable batteries - designed for everyday life, they will outperform expectations on both high or low drain devices. The batteries are also quite expensive, but if you need a direct replacement for a set of alkaline batteries, there’s nothing better.The product name, Ansmann Digital AA HR6 2850mAh, tells you all you need to know. These are super-high-capacity AA rechargeable batteries with a massive rated 2850mAh capacity. We can safely say that this is correct, and in our tests, the Ansmann Digital AA HR6 2850mAh batteries delivered a huge capacity of 2911mAh, with little fluctuation over the entire 50 cycles. I then charged and discharged the batteries 50 times, taking measurements every 10 cycles. As you can see from the graph, the batteries held up well, with little variance between the starting and ending charges. No only that, but these batteries are designed to hold their charge: up to 70% after five years. This is excellent news, meaning you can charge these batteries so that they’re ready to go and use them at your leisure. In addition, they work well in low-discharge devices, such as remote controls: you should see similar battery life here as you do with non-rechargeable batteries. Fact: New generation rechargeable batteries are pre-charged and ready to use right out of the box. There is no need to charge them up before first use. Charge 10 charger is compact and stylish, it charges four 1700mAh AA Recyko Charge 10 batteries to 90%+ of full charge capacity in just 10 minutes. Other AA rechargeable batteries are also compatible with the Charge 10 charger. Its intelligent charging profile selects the optimum charging current, from 1.5A to 10A, to fully charge up the batteries in the shortest period. Choose between two charging settings: Ultra-fast when time is of the essence or Eco mode to maximise battery lifetime.

I then measured the initial capacity of the batteries, which came in at 2218mAh when tested with a high drain of 600mA (+/- 20%). That’s higher than the rated capacity by a decent amount. Based on internal test by GP of the average percentage of battery capacity charged after a 10-minute charge as of May 2021. Calculated from 5 simultaneous charges of 4pcs of new Charge 10 1700mAh AA batteries to 90%+ of capacity at 20°C, followed by battery discharge according to IEC 61951-2.Myth: Rechargeable batteries always need to be fully charged and discharged, otherwise they lose capacity. Incredibly, they’ll also hold 70% of their charge for ten years, so you can use them in low-drain devices, such as remote controls without fear that they’ll just discharge naturally. That’s also good news if you want batteries that you can charge and have ready to go. For their flexibility and longevity, the GP ReCyko Pro 2000mAh AA are the best overall rechargeable batteries that we have tested.

Next, I measured initial capacity, using a high drain test (600mA +/-20%). Initially, the GP ReCyko 2600mAh AA showed a capacity of 2805mAh, which is considerably higher than the quoted drain. That’s impressive. When it comes to cameras, rechargeable batteries can cut down on unnecessary bulk for photographers and tend to be a more reliable option when it comes to capturing memories. Shop with GP to discover your photographer essential batteries.

This kind of emits heat, and therefore you can hear the hiss from the built-in fan when charging. The charging current is stated at 1.5-10 amps, while ReCyko Pro works with 2 amps charging current. Fact: New generation rechargeable batteries keep their capacity for at least 500 charges, no matter to what percentage they are charged or discharged.