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dreamz
04-23-2004, 07:59 AM
Hey, i got a Super Hornet... I got 2 battery's... 1 is a 1200 & the other a 1500... I have one of those 7.2V Nicad Chargers. The one that works of the 12V car battery and charges for 15mins...

Problem is that when i charge it for 15mins i only get to play with the car for about 5mins before it dies! :cool: :mad:

The 1500 is a new battery... bought it yesterday....

Is it safe to make it charge for longer than 15mins (like, make it charge twice for 30mins?) or will this damage my battery?

or do i need a new charger?

HELP! :eek:

lerningdriver
04-23-2004, 08:40 AM
well your 1500mah battery wont last more than 7 minutes tops. what setup are you running?

and dont charge your battery twice it'll kill the cells.

Jeckler
04-23-2004, 10:22 AM
Actually, charging the battery 500 times is acceptable, as long as it doesn't get hot.
Sounds like you're using a very basic charger, with a timer, and maybe a switch to select charge or discharge.
If the battery is dead, charge it for 15 minutes, checking it occasionally for heat. If it's still cold after the first run, reset the timer and do it again. You'll know when the battery is charged when it starts to get warm.

lerningdriver
04-23-2004, 12:41 PM
i'm saying from experience though i'm not sure its so correct. my friend had a towerhobbies timer charger and killed his cells by charging them 3 times over and over again.

TJNMT
04-23-2004, 03:36 PM
Actually, charging the battery 500 times is acceptable, as long as it doesn't get hot.
Sounds like you're using a very basic charger, with a timer, and maybe a switch to select charge or discharge.
If the battery is dead, charge it for 15 minutes, checking it occasionally for heat. If it's still cold after the first run, reset the timer and do it again. You'll know when the battery is charged when it starts to get warm.


In the past before peak chargers were ever made up to where I still could not afford one. I used that method for 4 years and have not had 1 pack go dead on me. Took me about 20 mins for each pack back then.

kerem550
04-23-2004, 04:00 PM
a peak charger may be a great investment for you. buy one and don't worry for your batteries.

lerningdriver
04-23-2004, 05:45 PM
yea, I'm pretty sure you can get one for under 30$

lerningdriver
04-23-2004, 05:53 PM
35$ but close
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXD548&P=0

highroller
04-25-2004, 01:21 AM
15 minutes is not enough time to completely charge any RC battery even 1200ma. So first you are not completely charging the battery and second you need to discharge it after using before charging again - allowing sufficeint time for it to cool. First start with battery completely discharged, attach one (1) 1157 lightbulb to pack and remove as soon as bulb goes out, allow pack to cool 30 min to 1 1/2 hours, then charge (4.00 to 5.00 amp) battery setting timer to 15 min near the completion turn dial back for another 10-15 minutes and monitor the pack. Look for the meter to drop, or for pack to get warm best thing to do is monitor the pack voltage voltage with a DVM by looking for a drop in voltage. For example voltage reaches 9.48 then begins to drop (analog scale may drop later) when voltage is about 9.45 to 9.43 the pack is charged, remove.
Depending on motor and vehicle you may see 3 -8 minutes of use.