just want to know hoe long to dischar a bat
"look into my eye"
You can and you can't. Depends on how much draw your discharger has.
8017312 Three
yes you can over discharge a battery, specifically NiMH. Depending on the rate at which you discharge and how many volts you leave left in the battery.
nihm- I used to discharge them before I used them (let them cool off before recharging them).
8017312 Three
Shell out the money and get yourself a good charger, like the Duratrax Intellipeak ICE or the Electrifly Triton. They've both got an auto cutoff feature for charging and discharging and they allow you to cycle your batteries if you need to. They also charge NiCD, NiMH and lithium batteries, making them versatile. The Duratrax has a few nifty features that the Triton doesn't have, and it's $119 + tax at RC Country. It sounds like a lot, but considering that most "good" NiCD/NiMH chargers cost around $50-70 anyways, may as well get the best that your money can buy. A charger is an accessory that you'll reuse time after time. Invest in a good one.
Neouser's advice in on the right track. I got like a dozen of battery chargers. They keep on coming out with better and better ones from time to time to suit new versions of rechargable batteries. Just had get a Duratrax ICE charger cause all my old ones cannot recharge Lithuim Polymer battery pack I use for a project RC car and my collection of AEGs. Some hobby stores sell devices called battery discharger. They are either a little doggle with a red LED or a row of automotive small light bulbs wired to a Tamiya battery plug. Those devices will discharge your battery slowly but safely within out over draining your battery pack. At one time those discharger devices were very popular but now most folks just buy a high tech charger with a built-in features such as conditioner, discharger, warmer, and battery peak detection charging.