Joined Feb 2003
3K Posts | 384+
Escondido, Ca. USA
I thought I would memorialize this for easy retrival.
As of 10/11/2010 Optimate has quite a few choices in battery chargers based on their original design.
The Optimate "3" is for batteries 2ah (amp hours) -32ah
The Optmate "3+" is for batteries 2ah - 45ah
The Optimate "4" is for batteries 0ah - 75ah ( .8amp basic charging rate)
The Optimate "5" is for batteries 7.5 - 120ah ( 2.5 amp basic charging rate)
The Optimate "6" is for batteries 15ah - 240ah ( 5 amp basic charging rate)
The Yuasa YTZ7S battery capacity is 6 amp hours, so the correct Optimate charger for your 2001 - 2011 Berg would be either the 3, 3+ or 4.
For a car, truck or motorhome the 5 or 6 may be more appropriate but you can still use the lower powered chargers on them, it will just take longer to fully charge.
Yuasa claims that a lead acid battery can lose 50% of its charge in two weeks. A very good reason to always keep them plugged in when not in use.
As of 10/11/2010 Optimate has quite a few choices in battery chargers based on their original design.
The Optimate "3" is for batteries 2ah (amp hours) -32ah
The Optmate "3+" is for batteries 2ah - 45ah
The Optimate "4" is for batteries 0ah - 75ah ( .8amp basic charging rate)
The Optimate "5" is for batteries 7.5 - 120ah ( 2.5 amp basic charging rate)
The Optimate "6" is for batteries 15ah - 240ah ( 5 amp basic charging rate)
The Yuasa YTZ7S battery capacity is 6 amp hours, so the correct Optimate charger for your 2001 - 2011 Berg would be either the 3, 3+ or 4.
For a car, truck or motorhome the 5 or 6 may be more appropriate but you can still use the lower powered chargers on them, it will just take longer to fully charge.
Yuasa claims that a lead acid battery can lose 50% of its charge in two weeks. A very good reason to always keep them plugged in when not in use.
