I recently ordered two 510 Mega Cartomizer Kits from mad vapes.Com. One for me and one for the wife.
510 Mega Catomizer Kit
The kits arrived on Monday and the mega batteries came pre-charged. Right off the bat, one of my batteries failed. (These are manual batteries.) The battery got stuck in "on" mode, overheated, toasted the cartomizer and died. The next day, my wife had a similar experience after recharging one of her batteries and it died a tragic death as well. The other two batteries are working like champs and we've been vaping like fiends with them.
I went through Mad Vapes' customer contact form, told them about the deceased batteries and asked them about replacements. Today I got this response:

510 Mega Catomizer Kit
The kits arrived on Monday and the mega batteries came pre-charged. Right off the bat, one of my batteries failed. (These are manual batteries.) The battery got stuck in "on" mode, overheated, toasted the cartomizer and died. The next day, my wife had a similar experience after recharging one of her batteries and it died a tragic death as well. The other two batteries are working like champs and we've been vaping like fiends with them.
I went through Mad Vapes' customer contact form, told them about the deceased batteries and asked them about replacements. Today I got this response:
So kudos to Rick and Mad Vapes for making things right, no questions asked. 5 star cusotmer service and I will be sure to use them again in the future.Rick From Mad Vapes said:William,
this really isnt how our policy works, but since you just got the kits from us , i feel that we should provide the return shipping,... so, we shipped out a new couple new batteries for you today,... usps # 9101148008600051359960, please drop the bad one in the postage paid envelope and toss it in the mail back to us,...
Thanks,... Rick
