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用R5421N芯片作铝电池充电问题?不知为什么电路可以充电,但不能放电,有电路请高手诊断一下/.谢谢看看500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/49/1169457603.gif');}" onmousewheel="return imgzoom(this);">
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