Yamaha SR400 2014 Service Manual

ELECTRICAL COMPONENTS7-614. Check:• Battery charge▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼a. Connect a pocket tester to the battery termi-nals.TIP• The charge state of a VRLA (Valve RegulatedLead Acid) battery can be checked by measur-ing its open-circuit voltage (i.e., the voltagewhen the positive battery terminal is discon-nected).• No charging is necessary when the open-cir-cuit voltage equals or exceeds 12.8 V.b. Check the charge of the battery, as shown inthe charts and the following example.▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲5. Charge:• Battery(refer to the appropriate charging method)WARNINGEWA13300Do not quick charge a battery.NOTICEECA13671• Do not use a high-rate battery chargersince it forces a high-amperage currentinto the battery quickly and can cause bat-tery overheating and battery plate damage.• If it is impossible to regulate the chargingcurrent on the battery charger, be carefulnot to overcharge the battery.• When charging a battery, be sure to removeit from the vehicle. (If charging has to bedone with the battery mounted on the vehi-cle, disconnect the negative battery leadfrom the battery terminal.)• To reduce the chance of sparks, do notplug in the battery charger until the batterycharger leads are connected to the battery.• Before removing the battery charger leadclips from the battery terminals, be sure toturn off the battery charger.• Make sure the battery charger lead clips arein full contact with the battery terminal andthat they are not shorted. A corroded bat-tery charger lead clip may generate heat inthe contact area and a weak clip spring maycause sparks.• If the battery becomes hot to the touch atany time during the charging process, dis-connect the battery charger and let the bat-tery cool before reconnecting it. Hot• Positive tester probe Positive battery terminal• Negative tester probe Negative battery terminalExampleOpen-circuit voltage = 12.0 VCharging time = 6.5 hoursCharge of the battery = 20–30 %A. Open-circuit voltage (V)B. Charging time (hours)C. Relationship between the open-circuit volt-age and the charging time at 20 C (68 F)D. These values vary with the temperature, thecondition of the battery plates, and the elec-trolyte level.A. Open-circuit voltage (V)B. Charging condition of the battery (%)C. Ambient temperature 20 C (68 F)