Either get a stock Yuasa or a lithium-iron battery. The S200's 163cc engine takes more to turn over than a 125cc. The cheap replacements that supposedly replace a YTX7A-BS don't have the CCA of the Yuasa. They may be fine for other bikes, but not the S200. I wasted my money on two of these cheaper batteries.
The YUASA AGM (Absorbed Glass Mat) will do ya well. The LI Fe batteries do great until you hit a bit above freezing, then they drop off fast.
I use AGM's in temperate Seattle with no issues down to a bit below freezing.
An SLA (Sealed Lead Acid/flooded) battery is a bit cheaper, but has less power, & is a bit heavier than the same size AGM. The cost difference isn't huge, so I'd avoid 'em & watch out for those if you're checking a general battery site since they tend to sneak into price comparisons.
Best place I've found to get the YUASA is off Amazon
https://www.amazon.com/Yuasa-YUAM32X7A-YTX7A-BS-Battery/dp/B000N5R6W2Even when there's an option to get a pre-filled battery I get the ones that you have to add the acid to so the battery is as fresh as possible
If you do that:
- You will have to add the acid yourself - Read the directions and follow them & you'll have no issues. Do keep some baking soda or baking soda water mix handy just in case.
- You will need to have a charger, good for 1-2 amps per hour slow charge, and a place you can let it take it's initial charge.
Read the directions, & don't use a charger that puts out more than about 25% of the amp rating of the battery. If you dig around you can find sites that explain why, but the short is the harder you charge it the more heat you generate. Too much and you get issues. I have a 2 amp car charger kicking around that's worked OK for me to date. I do keep the battery some place it can't damage just in case of course, but really no issues to date.
If ya ain't got the place, the confidence, & patience, or are a 5 thumbs type I recommend getting a YUASA from your local dealer for a few bucks extra.
I don't recommend any other brand. I've had at best mediocre, & in general bad luck with others, save on SLA I paid too much for from Budget Battery.
That said:
You can get an OK battery from outfits like Battery Shark that have a Chinese battery with the acid in it already, but if you read the reviews you'll see they're pretty hot and cold with quite a few saying that the seller was great on the warranty and the second or third battery was great.
It's great that they're good on warranty, but since I ride for transportation, not just recreation it's a hassle I'd rather avoid.
Getting a dry battery and setting it up fresh myself then being done until it's time for a new one 2-4 years later is my preference.
Far as Motobatt goes, they were the darling of the Burgman 650 crowd for some time, but reports of QC problems took the shine off them a couple years ago. Their biggest boosters went back to YUASA. Maybe their batteries in this category are better, or they just had a bad run. Tough to say.
In all cases I do recommend a trickle charger if you don't have one.
Hope that's helpful.
Tromper