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FAQ - Batteries

How do we determine the capacity of our battery packs?

To obtain values you can rely on when using your lamp, for measurement purposes, we discharge at a high current of 2 A that is also to be expected in real-world application. This always results in slightly lower nominal values than given by other manufacturers who discharge at lower currents to achieve promotional, high values.

How high is the self-discharge of lithium-ion batteries?

Lithium-ion batteries are unbeatable in this respect: at the most approximately 10% per year at a storage temperature of 20°C, at lower temperatures even less.

How often can I recharge a lithium-ion battery pack, what is the life expectancy?

The life of a battery pack depends on different factors. On the cell type, on how much it is used and on how it is treated. In general, a life of 500-800 charging/discharging cycles can be assumed before the battery's capacity decreases significantly (80% of the nominal value). This corresponds to a minimum period of use of approximately 3-5 years if the battery is used twice a week.

How high is the loss of capacity at low temperatures during use?

Always charge the battery pack after use and keep it in a warm place; take it outside just shortly before use. The insulation of bottles and bags delays cooling by 2-3 hours. Only after that period of time, the cells in the interior are cold and will become slow, the voltage status decreases.

In lithium-ion batteries, the loss of power at cold temperatures is considerably lower, however, it is still recommended to carry battery packs under your clothes in case of extreme sub-zero temperatures.

My battery won't charge any more. What might be the cause and what can I do?

In many cases, the battery and the charger are in perfect condition, merely the battery protection has been triggered. For solving this problem, all you need is a little patience. Leave the battery connected to the charger and after a while - it may sometimes take a couple of hours - the battery will charge again.

How do I store a lithium-ion battery for several months?

2 options:

You may leave the battery connected to the charger. Power consumption is not measurable, as the battery's charging status is maintained by short current pulses every 2-4 minutes.

If you do not want to leave the battery connected, charge the battery completely or, ideally, 40-50% and keep the battery in a cool place for no longer than 3 months.

The place should be cool and of course dry. Temperatures below 15 °C are favorable (Caution! Keeping the battery in your home might be problematic during the summer).

Extreme example: Storage of a fully charged lithium-ion battery at 30 °C (direct sun light) irreversibly damages the battery - it may even fail completely.

I own a Charger One. How do I store my lithium-ion battery?

Principally, lithium-Ions may be stored over a considerably longer period of time. Ideal storage conditions are achieved if the battery is stored with a charging status of 40-50% of the overall capacity. The Charger One provides a dedicated storage program (50%Li) for this purpose.

I used the lithium-ion battery only for a short time. Should I nevertheless charge it again immediately? Or rather use it again and discharge it?

If you expect your next tour to be no longer than the remaining capacity will last, do not charge the battery immediately. The life of a lithium-ion battery is also determined by the number of charging cycles. Each charging cycle, even the shortest, is recognized by the battery as such; therefore, rather avoid charging the battery unless it is really necessary.

I have a Ni-MH battery/charger and need a new battery.

By now, the much more powerful lithium-ion technology has become the accepted standard throughout the industry and Lupine has also been using lithium-ion batteries for years. Our new lithium-ion batteries of course also work with all older lamp models. The only thing to be observed is that a lithium-ion battery also requires a lithium-ion charger.

My SmartScore battery shows incorrect values, which can be the cause?

An unexpected shutdown of the battery internal electronics has deleted the values.

This can be easily remedied, the battery should be discharged and loaded, no matter how. After that everything works smoothly again. There are several ways you can do this. Discharge the battery on the lamp head can be lit until the lamp automatically turns off. It is not necessary to activate the reserve tank.

Then you have to load the Battery completely and it is done!

If you have a Charger One, this is particularly convenient to implement, change the mode to unload / load and everything else is done automatically.