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| !! 危险先兆 !! Symptoms
 
 
 ==自電筒/電池发出異响/(强烈)異味
 ==電筒/電池不尋常的温度提升
 ==開電筒筒尾/筒身时, 传出(强烈)異味或发现电池流出化学品
 ==電池外壳受损
 ==在使用後, 两粒(或以上)的電池電压明顯不同(锂充电更要小心!)
 ==電筒筒尾/筒身的软胶部份如吹泡泡一样涨起
 ==在存放電筒/電池的地方, 發现(强烈)異味/流出化学品
 ==你的锂充電池電压比正常低很多, 甚至测不出電压
 ==充電池时, 你的"智能"锂充電池充電器(最少要有过充保护)测不出有放入的锂充電
 
 ==Strange sound/gas emitting from the light/battery (Hsssing sound)
 ==Really hot/warm flashlight body, warmer than usual
 ==leaking cells or really strong odor when opening the tailcap of flashlight
 ==visible damage to the cells' cases
 ==dramatic difference between two(or more) cells' voltage(one cellmight be dead, really dangerous for rechargables) after some use
 ==tailcap/rubber parts of the flashlight blew up like a balloon
 ==where you store the flashlight has a strong smell/leak of chemistry
 ==Your li-ion rechargable has gone/constantly go to a really lowlevel of voltage or you can't even get a reading from your battery
 ==Your 'smart' charger(which at least have voltage cutoff) does not charge/does not seem to acknowledge your battery
 -- 请勿... --
 Don't...
 
 + 一起使用/共用不同品排的電池在同一筒身
 + 一起使用/共用不同化学成份的電池(如锂充電及一般锂電)
 + 一起使用/共用不同大小的電池(如C電+AA電)
 + 一起使用/共用新及巳用过(旧)的電池
 + (小心)使用可能会损坏電池池身的電筒
 + 继续使用已蚀出化学品(或池身已损坏)的電池
 + 让未熟使用内情的人(特别是小朋友)使用你的(高温)電筒或锂充電/锂電
 + 让電池短路
 + 过充或过放充電(特别是锂充電!)
 + 让带電池的電筒/電池在太阳或高温下存放/使用
 + 在不常使用的電筒筒身内放入電池(特别是车厢内的電筒)
 + 用壓缩气/冷空气清理刚用過的灯泡或電筒返光杯(小心, 會爆!)
 + 用手触摸halogen/xenon灯炮, 而没有用酒精清理表面
 + 使用/继续使用浸過水的電池
 + 使用没保护的锂充電池, 特别是用於没有低压自动断電的電筒或用家不知何时自己断電
 + 使用"非智能"锂充電池充電器(没有过充保护)去充没保护的锂充電池
 + 使用/继续使用可能己出问题的锂充電池(如用後锂充電池電压奇低)
 + 用過高的電流充電(>1C)
 + 在沒有對充電器, 電池及有關的電路知識有充份了解和掌握前, 自製充電器/充電器電池架/電池架
 
 + Use/mix different brand of cells in the same flashlight
 + Use/mix different chemistry batteries together
 + Use/mix different size of the batteries together
 + Use pre-use(really old) cells with new cells
 + Use flashlight that might damage the cells(the crushed bottom or peeled the cell wrappings)
 + Continue to use leaking batteries/rechargable batteries
 + Let people who don't know about how to handle the light/(rechargable cells) using your lights
 + Use dropped/damaged batteries
 + Short the batteries
 + Overcharge or overdischarge li-ion rechargables
 + Put flashlight and/or batteries directly under the sun/next to high heat
 + Put batteries in the light when you are not going to use it often/soon(especially those stored in the vehicles)
 + Use compressed/cool air to clean the (super) bulb/reflector when it has just been used
 + Touch the halogen/xenon bulb with bare fingers and without cleaning with alcohol
 + Put/continue to use wet batteries in the flashlight
 + Use unprotected li-ion when your flashlight does not have low voltage cutoff(or you don't know when to cut it off yourself)
 + Use unprotected li-ion battery with 'dumb' charger(which has no voltage cutoff/detection)
 + Continue to use a suspected-dead li-ion battery(e.g. really low voltage reading)
 + Charging your battery more than 1C
 + DIY any kind of battery rack/charger battery rack/charger, without proper EE or battery understanding/knowledge
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