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Post by Malcolm S on Aug 19, 2007 0:35:14 GMT 1
Hi Folks I have had my Cub for a couple of months now and purchased an extra stock battery for it and have just bought a 9.6v 1400mah battery to make things more exciting. ;D However I have some questions about charging/discharging these batteries. In the manual it states that the supplied battery should be discharged before charging for the first time. My question is should this be done everytime as I do not always fly my Cub until the battery cut off has activated? Also how soon do the batteries discharge if not used straight after charging - can I charge them in the morning and not notice much of a change in flight time if I do not fly until the evening or next day? All and every thoughts welcome  Malcolm |
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Post by SCC on Aug 19, 2007 14:37:07 GMT 1
Before exchanging my battery for a fresh one, i always let the motor run until the cut off. NiMh have something called ''Memory effect'' so its wise to discharge completely and then charge.
They also self discharge. So if they have been hanging around for a day after a full charge, it's probably best to give them a quick boost for maximum output.
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Post by duck9191 on Aug 19, 2007 22:43:07 GMT 1
some batteries need to be cycled a few times before you see max capacity. nickel cadmium has a much worse memory effect then nickel metal, i wouldn't make it a practice of only half discharging them all the time but if your out flying and wanna recharge you will be fine. just every once in awhile cycle them. nickel cadmium batteries are a different story, you have to cycle them or they will lose alot of there capacity.
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joeflyer
Flying officer
"It's a great day to fly!"
Posts: 33
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Post by joeflyer on Aug 26, 2007 7:02:41 GMT 1
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Post by kalnaren on Aug 31, 2007 4:37:07 GMT 1
Before exchanging my battery for a fresh one, i always let the motor run until the cut off. NiMh have something called ''Memory effect'' so its wise to discharge completely and then charge. They also self discharge. So if they have been hanging around for a day after a full charge, it's probably best to give them a quick boost for maximum output. NiMh do not suffer from memory effect like Ni-Cad barreries do. You can charge them a good 20+ times without discharging without noticable effects. I usually drain mine completely about every 20-30 charges, depending on the type of charger you use. Ni-mh batteries should also not be stored drained, as like you said they "self discharge". If they are stored at no charge for a long period of time it can cause them to reverse polarity which pretty much writes off the battery. Even with the battery drained to the point where the cub motor cuts, there is still a large amount of power in the battery. If the battery has been sitting for a long time (a few months) it wouldn't hurt to deep cycle it. Likewise if something happens to the battery (like the charger shorts and screws it up) a deep cycle can usually fix it. Not sure if the same holds true for Ni-Cad batteries but I've successfully recoverd Ni-Mh batteries before with one or two deep cycles. Hope this helps! Kal |
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Post by SCC on Aug 31, 2007 11:37:41 GMT 1
 Looks like i better do some more reading.  |
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Post by kalnaren on Aug 31, 2007 13:41:41 GMT 1
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Post by trollsplitter on Sept 13, 2007 7:51:57 GMT 1
great link Kalnaren
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