I am not sure what is supposed to be my cup of tea but in reference to batteries... most batteries are re-badged batteries. I pulled up my parts catalog (yes, for a I bike I don't own...nerd alert) and the parts guide says "BATTERY YT12A-BS". In my experience with batteries, the letters can tell you the maker and physical size of the battery. IN most cases that I have found, if the battery starts with a Y, it was likely manufactured by Yuasa regardless of the brand name on the battery.
12A is about the physical size and amperage and storage capacity
the BS are where the terminals are on the battery (what size and which side the positive is on, what type of terminals are there)
So.. if you are looking to replace a YT12A-BS.. you can use any battery ending in xx12A-BS. There are a limited number of manufacturers and thousands of brand names all being made by the same few manufacturers.
Yuasa makes all of these brands:
Convential series [Wet Power Sport]
ECO-R series [Starting & Power Sport]
ED series [Deep Cycle]
GS-CB series [Wet Power Sport]
GS Convential series [Wet Power Sport]
GS-GT series [AGM Power Sport]
Japan Storage Battery, (Japan) +81-75-312-1211 or
http://www.gs-yuasa.com/jp/AGM Batteries Ltd. [Li-ion], (UK) +44-1947-808000
Atlas Battery Ltd., (Pakistan) +92-21-2567990
Beijing Ri jia Power Supply Co., Ltd., (China) +86-10-67739298
CZX
Fiamm-GS S.p.A. [VRLA], (Italy) +39-0444-709350 or
http://www.fiamm.com/Fiamm-GS
GS
36 Volt [SLA Deep Cycle]
Motorcycle Series [Power Sports Starting]
Zi:ta Series [Starting]
GS Battery (China) Co., Ltd., (China) +86-510-534-2011
GS Battery (USA) Inc., (US) [Power Sports Starting], +1-678-762-4818, 1-800-472-2879 or
http://www.gsbattery.com/GS Battery Vietnam Co., Ltd., (Vietnam) +84-650-756360
G-PowerZone
Portalac [SLA Deep Cycle]
P.T. GS Battery Inc., (Indonesia) +62-21-6518979
GS
Shandong Huari Battery Co., Ltd., (China) +86-531-3256306
Shandong Hanghai GS TopTiger Motive Power Co., Ltd., (China) +86-21-34150185
Siam GS Battery Co., Ltd., (Thialand) +66-2-323-9030
Superlac [SLA Deep Cycle]
Tianjin Tong Yee Industrial Co., Ltd. [Tongyee], (China) +86-22-25325681-90 or
http://www.tongyeebattery.com.cn/GS
Portalac [SLA Deep Cycle]
Ztong Yee Indusrial Co., Ltd., (Taiwan) +886-6-2532191 or
http://www.zyibattery.com/President
NP series [Deep Cycle]
Portalac series [Deep Cycle]
PWL series [Deep Cycle]
Sensia series [Starting & Power Sport]
SNS series [Deep Cycle]
UX series [Deep Cycle]
VG series [Deep Cycle]
VS series [Deep Cycle]
YTZ series [VRLA Power Sport]
Yuasa, (Japan)
http://www.yuasa-jpn.co.jp/Century Yuasa, (Australia) +61-7-3361 6161 or
http://www.cyb.com.au/Century
some Bosch
Enersun
HeatGuard MF
Marine Pro
Yuasa Automotive Batteries (Europe) Limited [Starting], (UK) +44-8708-500-257 or
http://www.yuasa-battery.co.ukCrompton [Starting}
Lucas [Starting]
Oldham [Starting]
Tungstone [Starting]
Yuasa [Starting]
Yuasa Battery Inc. [Power Sports & SLA Deep Cycle], (US) 1-866-431-4784 or
http://www.yuasabatteries.com/some Interstate, (US) [Wet & AGM Power Sports Starting]
Phoenix
New Generation
NP Series [SLA Deep Cycle]
Overlander
Road Power MF [Maintenance Free]
Road Runner
YuMicron
CX
http://tinyurl.com/4ukp9zz