UTX4L-BS(MF) 12V4Ah/10HR CCA 50A black factory activated motorcycle battery with yellow label

Factory Activated MF

Motorcycle Battery

Key Features of Our Maintenance Free (MF) Battery

  • 100% Pre-delivery inspection to ensure stable quality and reliable performance.
  • Pb-Ca grid alloy battery plate, low water loss, and stable quality low self-discharge rate.
  • Complete sealed, maintenance free, low self-discharge rate, good sealing property.
  • Low internal resistance, good high rate discharge performance.
  • Excellence high-and-low temperature performance, working temperature ranging from -30°C to 55°C.
  • Design float service life: 3-5 years.

Factory Activated MF Battery Safe Use Precautions

I. Warning


  1. The electrolyte inside the battery is corrosive and may damage metal, cotton products, and stone. Handle the battery properly.
  2. Do NOT place the battery on its side or upside down to prevent acid leakage.
  3. Hydrogen gas may be generated during battery operation and charging. If exposed to fire or sparks, it may cause an explosion. Please observe the following precautions:
    • Use and maintain the battery in a well-ventilated area.
    • Keep sparks and open flames away during battery maintenance.
    • If the battery is charged outside the vehicle, do not install it immediately after charging. Let it rest for at least 10 minutes to allow hydrogen gas to dissipate.
    • After riding, do not remove the battery immediately. Let it rest for at least 10 minutes.
    • During charging, the ambient temperature should not exceed 45°C. If it does, cool the battery with water or reduce the charging current and voltage.
  4. Do NOT place metal tools or conductive materials near the terminals to avoid short-circuiting.
  5. Do NOT strike the terminals with a hammer during battery installation.
  6. Handle the battery carefully during transportation to avoid impact or damage.

II. Factory Activated MF Battery Installation and Maintenance


  1. Connect the positive terminal first. Do NOT reverse the polarity, otherwise the motorcycle's electrical equipment may be damaged.
  2. Activation Notice:
    • Some batteries may not be activated immediately due to differences in vehicle performance. Start the engine several times or gently apply the throttle to help activate the battery more easily.
    • Manual activation is recommended to ensure the exact activation date is recorded.
  3. During acid filling, wear acid-resistant clothing, rubber boots, safety goggles, and rubber gloves. If acid splashes onto skin or clothing, rinse immediately with a large amount of water. Seek medical attention if necessary.
  4. Do NOT over-discharge the battery. Recharge the battery promptly after it has been discharged.
  5. Disconnect the negative terminal if the motorcycle will not be used for a long period.
  6. Do NOT check whether the battery has power by short-circuiting the terminals.
  7. Regularly check the terminal connections and ensure the terminals are clean to maintain good contact.
  8. Store the battery in a dry, well-ventilated place at 5-25°C, away from direct sunlight. Keep the battery at least 2 meters away from heat sources. Check and maintain the battery regularly.
ModelTypeVoltage (V)Capacity (Ah)Hour Rate (HR)Dimension±2 (mm)PolarityWeight±3% (KG)TerminalRegular Charge Current (A)Meter CCA (25±5°C)CCA (-18°C)Datasheet
6N4-BS(MF)YB Type641071*71*93+ -0.81W0.4N/A30PDF
6N6L-BS(MF)YB Type661095*55*117- +1.16C10.6N/A65PDF
B49-6(MF)YB Type6101091*83*159+ -2.07C21N/A90PDF
B38-6A(MF)YB Type61310119*83*161+ -2.35C21.3N/A110PDF
6N11A-BS(MF)YB Type61110121*58*130+ -1.76C11.1N/A100PDF
YB2.5L-BS(MF)YB Type122.51080*77*105- +1.03W0.25N/A20PDF
YB3L-BS(MF)YB Type1231098*56*109- +1.19C10.38035PDF
YB5L-BS(MF)YB Type12510119*60*129- +1.86C10.58050PDF
YB6.5L-BS(MF)YB Type126.510138*65*100- +1.98C50.6515575PDF
YB6.5L-BS(MF)YB Type126.510138*65*100- +2.16C50.6514075PDF
YB7B-BS(MF)YB Type12710148*60*128+ -2.21C20.714075PDF
YB7BL-BS(MF)YB Type12710148*60*128- +2.54C20.714075PDF
YB7-BS(MF)YB Type12810137*76*128+ -2.65C20.814085PDF
YB7L-BS(MF)YB Type12810137*76*128- +2.65C20.814085PDF
YB9-BS(MF)YB Type12910137*76*134+ -2.7C20.914085PDF
YB9-BS(MF)YB Type12910137*76*134+ -2.8C20.9160100PDF
YB9-BS(MF)YB Type12910137*76*134+ -2.95C20.9180110PDF
YB10L-BS(MF)YB Type121010132*88*145- +3.45Z11230120PDF
YB12A-BS(MF)YB Type121210134*78*156+ -3.63Z11.2240140PDF
YB12AL-BS(MF)YB Type121210134*78*156- +3.63Z11.2240140PDF
YB14-BS(MF)YB Type121410132*88*163+ -4.54Z11.4285185PDF
YB14L-BS(MF)YB Type121410132*88*163- +4.54Z11.4285185PDF
YB16AL-BS(MF)YB Type121610205*70*162- +5.42C121.6380200PDF
YB16L-BS(MF)YB Type121910173*100*152- +6.15Z21.9390240PDF
YB16CL-BS(MF)YB Type121910173*100*175- +6.25C91.9320240PDF
YB19L-BS(MF)YB Type121910181*77*167- +5.18B101.9170130PDF
YB30L-BS(MF)YB Type123010166*127*175- +8.5Z23290230PDF
YB32L-BS(MF)YB Type123210166*127*175- +9.1Z23.2390340PDF
GT4B-5(MF)UT Type122.310113*39*87- +0.82C110.238525PDF
YTR4A-BS(MF)UT Type122.510113*49*85- +1C100.258530PDF
UTZ5S(MF)UT Type12410113*70*85- +1.3C30.411545PDF
UTZ5S(MF)UT Type12410113*70*85- +1.4C30.412050PDF
UTZ6V(MF)UT Type12610113*70*105- +2.02C30.615085PDF
UTZ7S(MF)UT Type12610113*70*107- +2.02C30.615085PDF
UTZ7V(MF)UT Type12710113*70*120- +2.28C30.7150100PDF
UTZ8V(MF)UT Type12710113*70*129- +2.24C30.714085PDF
UTZ10S(MF)UT Type128.610150*86*94+ -2.85Z10.86220120PDF
UTZ12S(MF)UT Type1211.210150*86*111+ -3.36Z11.12200130PDF
UTZ14S(MF)UT Type1211.210150*86*111+ -3.52Z11.12230150PDF
UTX4L-BS(MF)UT Type12410113*70*85- +1.3C30.411545PDF
UTX4L-BS(MF)UT Type12410113*70*85- +1.4C30.412050PDF
UTX5L-BS(MF)UT Type12510113*70*107- +1.64C30.512555PDF
UTX5L-BS(MF)UT Type12510113*70*105- +1.79C30.513070PDF
YT7B-4(MF)UT Type126.510150*65*94+ -2.15C30.6515080PDF
YT7B-4(MF)UT Type126.510150*65*94+ -2.15C30.6521595PDF
UTX7L-BS(MF)UT Type12710113*70*130- +2.15C30.713575PDF
UTX7L-BS(MF)UT Type12710113*70*130- +2.24C30.714085PDF
UTX7A-BS(MF)UT Type12710150*86*94+ -2.4C40.718090PDF
UTX7A-BS(MF)UT Type12710150*86*94+ -2.48C40.7185100PDF
YT12A-BS(MF)UT Type129.510150*86*107+ -3.13Z10.95200120PDF
YT12A-BS(MF)UT Type121010150*86*107+ -3.32Z11245135PDF
YT12B-4(MF)UT Type121010150*70*130+ -3.12C91185100PDF
UTX12-BS(MF)UT Type121010150*86*130+ -3.29C41180100PDF
UTX12-BS(MF)UT Type121210150*86*130+ -3.87Z11.2210140PDF
UTX12-BS(MF)UT Type121210150*86*130+ -4.12Z11.2240165PDF
YT14B-4(MF)UT Type121210150*70*145+ -3.8C91.2185115PDF
UTX14-BS(MF)UT Type121210150*86*145+ -4.4Z11.2220150PDF
UTX14L-BS(MF)UT Type121210150*86*145- +4.4Z11.2220150PDF
UTX14-BS(MF)UT Type121410150*86*145+ -4.68Z11.4240185PDF
UTX14L-BS(MF)UT Type121410150*86*145- +4.68Z11.4240185PDF
UTX16-BS(MF)UT Type121410150*86*161+ -5Z11.4235165PDF
UTX16L-BS(MF)UT Type121410150*86*161- +5Z11.4235165PDF
UTX16-BS(MF)UT Type121610150*86*161+ -5.3Z11.6255200PDF
UTX16L-BS(MF)UT Type121610150*86*161- +5.3Z11.6255200PDF
YT20-4(MF)UT Type121810177*88*155+ -5.9Z21.8290200PDF
YT20L-4(MF)UT Type121810177*88*155- +5.9Z21.8290200PDF
YT20-4(MF)UT Type122010177*88*155+ -6.2Z22330240PDF
YT20L-4(MF)UT Type122010177*88*155- +6.2Z22330240PDF
UTX21L-BS(MF)UT Type122110205*91*159- +6.78Z22.1310220PDF
UTX24L-BS(MF)UT Type122410205*91*159- +7.4Z22.4400320PDF