Looking for a battery replacement for a Garrity spotite (model # S800G).

Adapter.

UpBright AC/DC Adapter Compatible with Vector VEC1138 ...

https://www.amazon.com > UpBright-Global-Adapter-V...
BatteryGuy Vector Sport SPOT 138BY Replacement 6V 4.5Ah Battery ... VEC139 VEC139C Xtreme Sport Spot Rechargeable Spotlight VEC192 VEC193 VEC189 Power On ...
Power Source: Corded Electric
Output Voltage: 12 Volts
Battery

Vector SPORT SPOT 138BY replacement battery ...

https://batteryguy.com > vector+sport+spot+138by-repl...
The 6v 4.5Ah Rechargeable Sealed Lead Acid (Rechargeable SLA) Battery ' BG-645F1 is a premium alternative to the Vector SPORT SPOT 138BY replacement battery ( ...
US$5.76 · ‎In stock

The bulb is a halogen car bulb. Take it to your local auto parts store like Canadian Tire.

Search Results for 6 volt batteries
6 Volt Sealed Lead Acid Batteries

Most likely has been charged as many times as possible. Time to replace the battery.

you could try the original supplier or ebay and failing that you could try searching online for a pdf manual and just buy any charger that is the correct type voltage and most importantly polarity, having looked at the bike its a childs harley type bike and is 6v 4ah and likely a sealed lead acid type so i would buy a 6v 500ma lead acid charger, if there is a charge port you will need a plug to match and you will need to check the polarity is correct or if there is easy access to the battery terminals you could just use the crocodile clips to the corresponding terminals on the battery itself there is a selection of chargers here 6V Lead Acid Battery Charger eBay a 500ma charger will charge the bike in 8hrs the higher the ah the faster it will charge but i wouldnt go much higher than 500ma without checking with the vendor that it is suitable for a 4ah battery hope this helps

This battery from Amazon.fr is a direct replacement for the one you are looking for;
http://www.amazon.fr/Wentronic-46758-Chargeur-Blanc/dp/B002E4WJJU/ref=sr_1_2/275-7749352-1575368?ie=UTF8&qid=1376668740&sr=8-2&keywords=6v+sealed+lead+acid+battery

I believe the replacement battery is a CA645 - 6V4.5AH/20HR. You can check your particular model number at: http://www.batterymart.com/p-6v-4_5ah-sealed-lead-acid-battery.html

The replacement battery can be purchased from almost any electronic shop, Radio Shack or online at www.batterymart.com/p-6v-4_5ah-sealed-lead-acid-battery.html

In March, 2006, Black & Decker purchased Vector Products, Inc. Since the acquisition, Black & Decker has assumed the manufacturing of all Vector products. For customer service and warranty information for Vector products, please contact Black & Decker Customer Service. Or, you can order a replacement battery from: www.batterymart.com/p-6v-4_5ah-sealed-lead-acid-battery.html

Contact Garrity at http://www.garritylites.com/contactus.html