Question: Which part of the Honda CD200 RoadMaster is used to charge the battery while the engine is running?

Context articles: Buick Straight-8 engine
Honda EV Plus
Honda CD125TC Benly
Honda P engine
Honda H Engine
Honda Rafaga
CVCC
Honda CD200 RoadMaster
Automotive battery
Alternator (automotive)

The Buick Straight-8 engine (Fireball 8) was produced from 1931 to 1953 and sold in Buick automobiles, replacing the Buick Straight-6 engine across the board in all models in 1931.
 Like many American automobile makers, Buick adopted the straight-8 engine in 1931 as a more powerful alternative to the previous engines.
 However, unlike most other car makers at the time, Buick had been using a valve-in-head/OHV overhead valve design or I-head since its inception and continued this practice in their inline-8 designs.
 The engine was sold in different displacements depending on the model of car and the year and was constructed upon two distinct (possibly more) block castings.
 The smaller displacement versions internally resembled the inline Chevrolet straight six, with additional cylinders.
 The large block version (the 345 and 320, used in large-chassis models such as the "Roadmaster") was considerably heavier and this weight adversely affected vehicle performance and handling.
 In earlier years the engines used cast-in-place bearings that were then machined, which made engine rebuilding an expensive procedure, but after 1937 they began using drop-in bearings.
 The last year for Buick's straight-8 was 1953, but only in the Special, as the new V8 322ci Nailhead became standard in all other lines in the same basic chassis.
 Starting in 1954, the Special received the V-8 as well.
The Honda EV Plus was the first battery electric vehicle from a major automaker with non-lead acid batteries.
 Roughly 340 EV Plus models were produced and released.
 The EV Plus was taken out of production in 1999 when Honda announced the release of its first hybrid electric vehicle, the Honda Insight.
 The EV Plus was made to learn about advanced battery use in an electric car and to meet California Air Resources Board requirements for zero-emission vehicles, the same as the new General Motors EV1.
 It served as a test bed for the pancake-style motor, electronic control unit, power control unit and the Nickel–metal hydride battery (NiMH) later used in Honda hybrids and developed further in the first Honda FCX Fuel Cell Vehicles made from returned (decommissioned) EV Plus chassis.
The Honda CD125TC Benly is a 124 cc , air-cooled, four stroke, twin cylinder "commuter" style motorcycle manufactured by the Honda Motor Company between 1982 and 1985 for the United Kingdom.
 Its engine size and power output were designed to conform to provisional licence restrictions of the time and it was a version of the Honda CD200 Benly introduced in the late 1970s, with the same four speed constant mesh transmission (as the "200") but electric start only.
 The machine was identical in all other respects apart from the engine barrel size.
 It was equipped with an enclosed chain and capacitor discharge electronic ignition.
 Brakes were drum front and rear and it had both centre- and side-stands.
 Electrics were 12 volt, and the battery was housed in the right-hand, side-panel.
 The left-hand panel contained a small toolkit.
 Instrumentation was by way of two handlebar-mounted binnacles.
 One contained a speedometer, with odometer and trip meter and was in miles per hour with markings for kilometres and maximum speeds in gears.
 The other contained warning lights for main beam, ignition/neutral and indicators.
The Honda P engine is an inline three-cylinder gasoline engine designed for use in Honda kei cars.
 The P engine was first used in the fourth generation Honda Life, as a successor to the Honda E07A engine.
 The P engine is produced in only one displacement variant: 658 cc, either naturally aspirated or turbocharged (the legislated maximum displacement of engines used in kei cars is 660 cc).
The Honda H engine was Honda's Larger high-performance engine family from the 1990s and early 2000s.
 It is largely derived from the Honda F engine with which it shares many design features.
 Like Honda's other 4-cylinder families of the 80s and 90s, It has also enjoyed some success as a racing engine, forming the basis of Honda's Touring car racing engines for many years, and being installed in lightweight chassis (such as the Honda CRX) for use in drag racing.
 The F20B is technically coded as part of the F-series family of engines; it is basically a destroked version of the H22A.
 It was developed by Honda to be able to enter into the 2-liter class of international racing.
The Honda Rafaga series CE4 and CE5 was a compact 4-door sedan sold only in Japan by Honda, introduced in January 1993, and used the same 5-cylinder engine that was used in the Honda Inspire and the Honda Vigor and shared a platform with the second generation CE series Honda Ascot.
 "Rafaga" is Spanish for "gust" or "blustery".
 The engine is installed longitudinally, the same configuration used in the Vigor and Inspire.
 The Rafaga was third in Hondas hierarchy of sedans, and a sister car to the Ascot, which was sold at the "Honda Primo" dealership network.
 The Rafaga was sold in Japan at "Honda Verno" dealerships, and was one level up from the Honda Integra.
 As with other Honda products, the Rafaga used double wishbone suspension at the front and rear wheels.
 The "2.5 S" trim level came with a front suspension upper strut brace in the engine compartment.
 In Japan, the smaller G20A engine used regular grade fuel, while the larger G25A engine used premium grade fuel.
CVCC is a trademark by the Honda Motor Company for an engine with reduced automotive emissions, which stood for "Compound Vortex Controlled Combustion".
 The first mention of Honda developed CVCC technology was done by Mr. Soichiro Honda February 12, 1971, at the Federation of Economic Organizations Hall in Otemachi, Chiyoda-ku, Tokyo.
 Honda's engineers at the time, Mr. Date conferred with Mr. Yagi and Mr. Nakagawa about the possibility of creating lean combustion via a prechamber, which some diesel engines utilized.
 The first engine to be installed with the CVCC approach for testing was the single-cylinder, 300 cc Honda EA engine used in the Honda N600 hatchback in January 1970.
 This technology allowed Honda's cars to meet Japanese and United States emission standards in the 1970s without a catalytic converter.
 A type of stratified charge engine, it first appeared on the 1975 "ED1" engine.
 As emission laws advanced and required more stringent admissible levels, Honda abandoned the CVCC method and introduced PGM-FI, or Programmed Fuel Injection on all Honda vehicles.
 Some vehicles in Japan had a combination of electronically controlled carburetors, called PGM-Carb on specific, transitional Honda D, E and ZC engines.
Honda introduced several 200 cc motorcycles with similar engines but different body variations in the 1980s.
 The model introduced in South Africa and Pakistan was known as the CD200 RoadMaster.
 It had a twin cylinder 10-degree cylinder angle with a 360-degree crank shaft angle engine which meant the pistons moved together and reached top dead centre (TDC) and bottom dead centre (BDC) at the same time.
 It was a detuned version of the Honda CD185 twin.
 The engine had the same bore as the CD185 but low compression pistons (8.8:1) with a bore and stroke of 53.0 x , compared to 9.0:1 Compression and 53.0 x for the CD185.
 The result was less power, a higher fuel economy and a lower top speed.
 The alternator system was also different from the CD185.
 Apart from this the models were much similar, using the same frames, suspension, wheels, tyres, and brakes.
An automotive battery is a rechargeable battery that supplies electrical energy to a motor vehicle.
 It is also known as an SLI battery (starting-lighting-ignition) and its main purpose is to start the engine.
 Once the engine is running, power for the car's electrical systems is supplied by the alternator.
 Typically, starting discharges less than three per cent of the battery capacity.
 SLI batteries are designed to release a high burst of current and then be quickly recharged.
 They are not designed for deep discharge, and a full discharge can reduce the battery's lifespan.
Alternators are used in modern automobiles to charge the battery and to power the electrical system when its engine is running.