I want better performance, should I attach 3 or 4 AA batteries? How about a 9V?
If you are using rechargeable batteries (NiMH or NiCad) then 3 batteries is better than 2. However, if you are using Alkalines, you won't get significantly more run time this way. In fact, with 4 batteries, the output voltage is 6V which is too high and could theoretically damage your device! The charger is optimized for about 3V input. For longer run time, use 2 C or D size batteries.
Parlex wrote:To recap: 4 Alkalines in series provides far too much voltage. What I don't understand is why can't 4 be used in a series parallel configuration? It will still provide 3v but the current draw will be split across all the batteries. Or am I missing something?
LHOON wrote:It worked from the first time with the 2 100k resistors as instructed, for my new iPhone 3GS.
No-load current is 0,18 mA
The current taken from the batteries (2 x NiMh) during charging reaches 1,5 A however!
AA's wont take long this way, hence I go for two 11000 mAh D-cell NiMh's.
Will have to look for a larger box however...
Tested works with: iPod nano/mini/photo/video/shuffle, iPhone (except 3Gs),
adafruit wrote:the 3Gs doesnt work well, which is why we putTested works with: iPod nano/mini/photo/video/shuffle, iPhone (except 3Gs),
on the product page at http://www.adafruit.com/index.php?main_ ... ucts_id=14
semicolin wrote:What resistors did you use for the voltage dividers...also could you possibly post a picture of the finished product
Users browsing this forum: No registered users and 3 guests