went to a 36v tm and added a 4th battery so i had to upgrade to a 4 bank noco charger so this one is for sale. it is GUARANTEED to work or your money back. must be picked up from my boat storage at 287&157 in s arlington so i can prove to you it works before any cash is paid or i cannot offer a warranty once it leaves my sight. been burned before on a car amp! these sell new for around $240 plus tax so i am asking $175 OBO. upon removal from the boat i discovered one of the screw tabs had broken off but it does not effect functionality it is only cosmetic. i have the tab and it can be epoxied back on which i will gladly do if you want me too.