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Piles-comment-choisir (voir la source)
Version du 14 septembre 2014 à 15:04
, 14 septembre 2014 à 15:04Page créée avec « {{PILES-NAV}} {{bloc-etroit|text=OK, so you have a project and now you want to power it off of a battery, how do you choose the best setup? The two easiest cases are the e... »
{{PILES-NAV}}
{{bloc-etroit|text=OK, so you have a project and now you want to power it off of a battery, how do you choose the best setup?
The two easiest cases are the extremes:
* '''Is your project very power-hungry?''' Projectors, large sound systems, and motorized projects all draw on the order of amps of current! You'll want to go with lantern cells (one-time use) or lead acid batteries (rechargable). If you are planning to be somewhat 'abusive' to the battery (heavy-usage, running it down all the way) you may want to look at "marine deep cycle" batteries.
* '''Is your project super-small, like an inch on each side?''' You're going to have to go with a lithium coin cell (one time use) or little lithium-polymer cells like the ones used for tiny RC planes.
Here are some other very popular cases:
* '''Do you need to make a lot of these things?''' Go with inexpensive alkaline batteries in popular sizes.
* '''Need to be user-servicable?''' 9V or AA size batteries are universal!
* '''~5V input necessary?''' 3 Alkaline (4.5V) or 4 NiMH cells (4.8V) will get you pretty close - check your circuit to see if it'll run at these slightly lower
* '''Making a 'rechargeable battery pack'?''' Use a battery holder from your local hobby/electronics/repair shop and stick with NiMH batteries, then recharge them with a high quality charger.
* '''Want to replace alkalines with rechargeables?''' Test to make sure that the lower voltage won't make the device unhappy.
* '''Need to stack batteries?''' Remember to stack batteries only if they have matching C and Ah capability, if you stack a 9V and a AA to make 10.5V the 9V will drain in 1/10th the time leaving you with 1.5V.
* '''Want your rechargable batteries to last a long time?''' Use a high-quality charger that has sensors to maintain proper charging and trickle charging. A cheap charger will kill off your cells.
{{PILES-TRAILER}}
{{bloc-etroit|text=OK, so you have a project and now you want to power it off of a battery, how do you choose the best setup?
The two easiest cases are the extremes:
* '''Is your project very power-hungry?''' Projectors, large sound systems, and motorized projects all draw on the order of amps of current! You'll want to go with lantern cells (one-time use) or lead acid batteries (rechargable). If you are planning to be somewhat 'abusive' to the battery (heavy-usage, running it down all the way) you may want to look at "marine deep cycle" batteries.
* '''Is your project super-small, like an inch on each side?''' You're going to have to go with a lithium coin cell (one time use) or little lithium-polymer cells like the ones used for tiny RC planes.
Here are some other very popular cases:
* '''Do you need to make a lot of these things?''' Go with inexpensive alkaline batteries in popular sizes.
* '''Need to be user-servicable?''' 9V or AA size batteries are universal!
* '''~5V input necessary?''' 3 Alkaline (4.5V) or 4 NiMH cells (4.8V) will get you pretty close - check your circuit to see if it'll run at these slightly lower
* '''Making a 'rechargeable battery pack'?''' Use a battery holder from your local hobby/electronics/repair shop and stick with NiMH batteries, then recharge them with a high quality charger.
* '''Want to replace alkalines with rechargeables?''' Test to make sure that the lower voltage won't make the device unhappy.
* '''Need to stack batteries?''' Remember to stack batteries only if they have matching C and Ah capability, if you stack a 9V and a AA to make 10.5V the 9V will drain in 1/10th the time leaving you with 1.5V.
* '''Want your rechargable batteries to last a long time?''' Use a high-quality charger that has sensors to maintain proper charging and trickle charging. A cheap charger will kill off your cells.
{{PILES-TRAILER}}