batterys
Moderators: BeligerAnt, petec, administrator
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batterys
Hi I'm kinda new to all this I've orderd some servos and a rx/tx system and I know how to modify the servos as I tested it on a spare from an old boat
I was just curious as to whats the smallest kind of battery i can get away with and where can i get a charger for them?
I have a holder for 4 aa batteries would this run it successfully on 3 servos?
Thanks
Danny
I was just curious as to whats the smallest kind of battery i can get away with and where can i get a charger for them?
I have a holder for 4 aa batteries would this run it successfully on 3 servos?
Thanks
Danny
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- joey_picus
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Welcome to the forums It depends largely on what sort of battery chemistry you intend to go for - realistically, in an antweight, you can get away with 100mah or thereabouts provided you're not doing a spinner and with lithium polymer packs that would be a bit less than 10g. However, if you're using servos, they (and the reciever) might need a voltage regulator to lower the battery voltage to a level that they can handle without detonating, so you might be better off going for some NiCad or NiMh packs which are about 10-15g for the same capacity (about 120mah at 6v?)
NiCads and NiMh can usually be charged from a transmitter/reciever charger, Lithium polymer on the other hand require specialist chargers such as the ProPeak Quattro if you can find one of those (Technobots have stopped selling them it seems?)
I don't know where you'd get the small NiCad/Mh packs from though, I've only ever used LiPos, usually with speed controllers and geared motors rather than servos, so it's not my field of expertise I'm afraid.
Hope that helps 4 AAs would run it with no trouble but they'd weigh a hell of a lot...
NiCads and NiMh can usually be charged from a transmitter/reciever charger, Lithium polymer on the other hand require specialist chargers such as the ProPeak Quattro if you can find one of those (Technobots have stopped selling them it seems?)
I don't know where you'd get the small NiCad/Mh packs from though, I've only ever used LiPos, usually with speed controllers and geared motors rather than servos, so it's not my field of expertise I'm afraid.
Hope that helps 4 AAs would run it with no trouble but they'd weigh a hell of a lot...
Joey McConnell-Farber - Team Picus Telerobotics - http://picus.org.uk/ - @joey_picus
"These dreams go on when I close my eyes...every second of the night, I live another life"
"These dreams go on when I close my eyes...every second of the night, I live another life"
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Thanks or your help
I have a charger with a tamiya connector
And I can get hold of an adapter to a jr thingy for a receiver battery, how long would it need to be charged for to fill a 6.0v battery?
Here's the specs for the charger if it's any help
input : AC110-240V
output : DC 1.2-12V
100-220mA
Chemistry: Ni-Mh Mi-Cd?
As for the battery there's a 6.0v nimh hump battery and it's only 29g for only ?5 with postage woopwoop
I have a charger with a tamiya connector
And I can get hold of an adapter to a jr thingy for a receiver battery, how long would it need to be charged for to fill a 6.0v battery?
Here's the specs for the charger if it's any help
input : AC110-240V
output : DC 1.2-12V
100-220mA
Chemistry: Ni-Mh Mi-Cd?
As for the battery there's a 6.0v nimh hump battery and it's only 29g for only ?5 with postage woopwoop
I'm an optimist prime
Not a negatron
Not a negatron
- earthwormjim
- Posts: 1190
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- Location: Secret Undisclosed Moonbase Location
http://component-shop.co.uk/
Batteries,
Remote Control,
Small,
9th entry...
6.0V 120mAh 1/4 AAA NiMH Battery Pack.
When weight is absolutely critical - weighs just 18.5g (0.65oz)
* ?4.00 each.
( I used the first entry,4.8v annd 15g for my featherweight,it was fine for running three small servos.)
Batteries,
Remote Control,
Small,
9th entry...
6.0V 120mAh 1/4 AAA NiMH Battery Pack.
When weight is absolutely critical - weighs just 18.5g (0.65oz)
* ?4.00 each.
( I used the first entry,4.8v annd 15g for my featherweight,it was fine for running three small servos.)
- BeligerAnt
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- Location: Brighton
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For NiMH or NiCd batteries, charge at a constant current generally not exceeding the capacity of the cells. Charge for 140% of the capacity.
So, for a 110mAh battery, charging at <110mA will be OK.
Total charge = 110 * 1.4 = 154mAh.
Charging at 100mA, charge time = 154/100 = 1.54 hours
So, for a 110mAh battery, charging at <110mA will be OK.
Total charge = 110 * 1.4 = 154mAh.
Charging at 100mA, charge time = 154/100 = 1.54 hours
Gary, Team BeligerAnt
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just found this
http://component-shop.co.uk/html/body_mw2168vd.html
near the bottom the tables really helpful
so im probably going to buy one of those and a few batteries
how long would these batteries genreally last for?
im initially going to stick with a flipper arm or similiar
if i was to modify it and attach a spinner for example would th
is battery still last a reasonable time?
http://component-shop.co.uk/html/body_mw2168vd.html
near the bottom the tables really helpful
so im probably going to buy one of those and a few batteries
how long would these batteries genreally last for?
im initially going to stick with a flipper arm or similiar
if i was to modify it and attach a spinner for example would th
is battery still last a reasonable time?
I'm an optimist prime
Not a negatron
Not a negatron
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- Posts: 255
- Joined: Sun May 01, 2011 2:30 pm
- Location: Manchester