mini quad rechargeable battery : 1. It is special used for Nokia  series 2. Long Extra Working Time 3. Top quality, 1 year warranty.  4.the material  can according to customer's requirement and sample 5.the high quality , energy -saving and competitive price 6.delivery date is subject to customer final confirmation  7.appearance: Bright surface gloss and attractive designs  8.merit:Environmental protection, energy saving, light weight , Low temperature resistance etc. 9.If you want to get more detailed information , please contact me directly or welcome to visit our website: http://dgyingyi.en.alibaba.comthe drawing as follows: