I have been using Chrome batters because there a greet price. I have purchased about 6-7 for ATVs, dirt bikes and street bikes,in the last 4 years, I have not had to replace EVEN ONE of the Chrome brand batteries that I have ordered on Walmart, and all have come in just a few days. I don't own a battery tender, I just start and run my bikes two or three times during the winter months. THANKS CHROME BATTERY , Steve2008 zx10, 2003 ktm exc, 2003 ltz 400, 2001 recon 250, 2006 st13000, 2005 sv650 ( ISee full review