1. Be SURE they have in-cell protection. !!!!!!!!!!!! 2. Batteries with a very high claimed mAh capacity have little chance of achieving the claim and are suspect for quality and as liars in general. I'= d guesstimate that anything over about 2750 mAh should be looked at with grea= t care. Ultrafire (Great! :-) name for a LiIon battery) is well known in the candlelight forums. Variably spoken of but not totally fly-by-night. They have medium and stupidly high capacity versions listed of UF so above warning applies. Look at capacity of reputable brands. Anything much above those should be shunned. Low doersn't mean good but high will be dangerous or lies. Sanyo 18650 2600 mAh $12-30, 5 - 20 quantity. http://www.campsolution.com/li-ionsanyo1865036v26ah2600mahcell.aspx 2008 shootout. Note that the A123 cells are clearly LiFePO4. http://www.rcgroups.com/forums/showthread.php?t=3D913122 Claim Sanyo 2800 mAh Free Brooklyn bridge with every order maybe ? http://www.ec21.com/product-details/Sanyo-18650-2.8Ah-Battery-Sanyo--414609= 8.html Taiwan 2009 Sanyo claim BUT 2200 2250 2400 2600 claimed. Could almost be real But seems maybe this sis more a generic id for "18650 LiIon" to them. http://www.allproducts.com/ee/zht/Product-2009111795539.html Related: Superb - 2002 Capacity fade of Sony [LiIon] 18650 cells at elevated temperatures. Part II - Capacity fade analysis. http://www.che.sc.edu/faculty/popov/drbnp/WebSite/Publications_PDFs/Web50.p= df Over charge and discharge tests of Sony 18650 cells http://www.stensat.org/Docs/battery_test_results.pdf Russell _battery _liion I have some On 8 January 2011 13:30, YES NOPE9 wrote: > I am refurbishing my 450ROG Gateway laptop battery pack. > It requires #18650 LION batteries and I would like to pay > a low price while avoiding crappy , counterfeit batteries. > Any suggestions ? > > Gus in Denver 99gus > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .