hp50g and power bank

[pier4r]

Thanks for the replies!

(03-27-2017 10:36 AM)Dieter Wrote:  If your 50g runs "very few hours" (say, 3 h) on a set of 700 mAh NiMHs this means that it permanently draws a current of something like 200 mA or more. Which sure is not typical. But then you say the calculator constantly shows a low battery warning. Both symptoms make me believe that the problem is at least one of your batteries.

I think you should try a set of quality (!) single-use batteries and see how long they last in your 50g. If this works fine simply get a set of high-quality NiMHs as well as a suitable processor-controlled charger. There have been several threads with recommendations for this.

What kind of batteries and what charger do you use now (manufacturer, exact type)?

Dieter

The batteries are quite used. I would say they are 3+ years old and they were charged at least 20 times.

recharger, a cheap one. It states output "2.8V 150 mA
batteries, beghelli (quite good in Italy) and energizer, 750 and 850 mAh.

I will try what you say. Although I remember that when I used the 50g in 2013 and 2012, it was always quickly out of battery (I had similar AAA batteries back then, but different charger)

Pictures coming.
http://i.imgur.com/qLY0WGk.jpg charger
http://i.imgur.com/DnXfAjI.jpg batteries

About the hack. I would prefer a powerbank, since those are heavily developed for today's monster phones (well, since 2013 monster phones in terms of battery usage)