monchan 7 Posted July 4, 2015 HI guys, I have eagle racing (broadtec) life batteries. I have some charging questions. I went to charge it this morning I followed the chargers directions (think I did anyway) And it only took about 3-4 mins. to charge. It was a brand new battery right out of the box. I`m thinking it came charged for storage and only needed a top up? don`t know. Still new to all this. The only other thing is the amp rate. This had to be set manually, could I have made a mistake and this caused it to not charge. The charger beeped, stopped and said full. I havn`t connected it yet planning to do the electrics today. charger is a hitec x1 ac plus battery Eagle racing (broadtech) li-fe EA2200 35c+ a2p The instructions for this battery came with only Japanese, so I have no hope there. Can anyone shed any light, maybe explain the battery numbers and if you can understand the amp settings from those numbers that would be super. Cheers. Share this post Link to post Share on other sites
markbt73 5316 Posted July 4, 2015 Most lithium batteries (both lipo and li-fe) are stored with a near-full (but not full) charge, so yeah, it probably just needed a "top up." If you're storing it for more than a day or two, you'll want to charge it to 70-80% full and leave it like that, or charge it full, run it down a bit, and then store it. Lithium batteries don't have a memory like nickel batteries do, so running them down partway and top-up charging won't hurt them. In fact, you don't want to run them down too low; that's why there are low-voltage alarms and cutoffs. (Newer Tamiya ESCs have a built-in cutoff for li-fe batteries, but not lipo.) As for charging amps, you want to charge it at "1C" (1 times capacity), which means the same amperage as the capacity in amp-hours. A battery labeled "2200" has a capacity of 2200 milliamp-hours, or 2.2 amp-hours, meaning that it can supply 2.2 amps for an hour before it needs to be recharged. So you would want to charge it at a rate as close to 2.2 amps as possible. It's okay to round up or down a little bit to the nearest setting if your charger can't be dialed in to an exact amp rate. 1 Share this post Link to post Share on other sites
monchan 7 Posted July 5, 2015 Thanks mate, Thats helpful to me. Being new to this, there is so much to get my head around. And buying the gear with japanese instructions does help either. Cheers. Share this post Link to post Share on other sites