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oxric wrote:

Romy: You may in the meantime build your own battery pack to increase the playtime you get from batteries. When I last spoke to PurePower (I placed an order for a PP2000 in another life and then cancelled the order), I asked whether they would provide me with necessary specs so I could build my own battery packs. They said I could do so and would send me in an email the specs in question. As it happens, they never bothered to but maybe they will provide you with the specs so you can increase the battery powered playtime, say to about 5-8 hrs so you are not kept indefinitely waiting for PP to resolve the present situation. Just a thought Kind regards Rakesh

Rakesh, I mover your post from the midbass thread:

http://www.RomyTheCat.com/TreeItem.aspx?PostID=15142 

…to keep the midbass project more or less free from electricity subjects, even thought nowadays the electricity do screw my midbass results.

I though myself temporary solution to beef up the PP2000 buttery. I know that PurePower does external Power Packs; I thought to ask PurePower to lend me a few or to get my own. They are 72V butteries; it would be a bit costly to make them at capacity, probably a few thousand dollars – too much for interim solution. If PurePower would propose to send me a few then I would probably use them but I afraid that it might keep PurePower from feeling the emergency to fix the problem.

There is another even bigger; my main reason why I feel the extended buttery might not be a good idea.  I do not know how PurePower does in sale but I do feel that they sell mostly regenerators not the buttery Power Packs. I would not be surprised if they do not sell buttery packs at all as operation from buttery packs is not what the unit meant to do. When you add more buttery packs to on-line UPS device then you can’t do it endlessly. The UPS devise has to have on-board automated chargers the will be able to handle the currents that extended battery packs would demand. The contemporary charging logic is all SS and all computerize, so it is very precise and very fragile. I am not sure that the PurePower units are tested properly for some kind of enormous buttery attached to them. If you look for APC UPS device then they strictly informs that max amount of A/H the given UPS device can charge. A few more mA void warranty.  That is right approach as the PS for charging are not bottomless. I am not sure that PurePower, truly know the current limit of their buttery charger and I do not want to be the person who “researches” it. It is not to mention that my all 3 PP2000 shut itself up with all different and very non-critical buttery drainage – 40%, 56% and 86%(!) of FULL charge.

So, I do not want to dive in unknown with buttery charging debugging and I would like to have my AC operation back to service….

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