MisterBeppe
Junior Member level 2
Voltage reduction of a battery pack
Hi, here I have a battery pack composed by 16 batteries (Sanyo Eneloop, Ni-Mh, 1.2 volt - 2000mAh). Since the nominal voltage of each battery is 1.2 volt, from the output of the pack (these batteries are connected in series) there are 19.2 volt.
Well, I need this battery pack to feed a pair of portable loudspeakers: the specs of these loudspeakers are: 12 volt - 200 mA. So, I can adopt two different ways: Convert the 19.2 volt to 12 volt using a step down buck converter like the following (which is switching, not linear) or modify my battery pack just to use 10 batteries in series, but I have some doubts about the last solution: when the batteries are fully charged they provide more than 1.2 volt for each battery, so I can't have exactly 12 volt from the output.
Pro and cons of each solution?
Can I go with the buck converter?
Many thanks.
Hi, here I have a battery pack composed by 16 batteries (Sanyo Eneloop, Ni-Mh, 1.2 volt - 2000mAh). Since the nominal voltage of each battery is 1.2 volt, from the output of the pack (these batteries are connected in series) there are 19.2 volt.
Well, I need this battery pack to feed a pair of portable loudspeakers: the specs of these loudspeakers are: 12 volt - 200 mA. So, I can adopt two different ways: Convert the 19.2 volt to 12 volt using a step down buck converter like the following (which is switching, not linear) or modify my battery pack just to use 10 batteries in series, but I have some doubts about the last solution: when the batteries are fully charged they provide more than 1.2 volt for each battery, so I can't have exactly 12 volt from the output.
Pro and cons of each solution?
Can I go with the buck converter?
Many thanks.