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6V 4Ah Rechargeable Lead Acid Battery SY4-6 for alarms, scales and toys

Brand: Songyuan

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SY4-6 Rechargeable 6V 4Ah Lead Acid Battery for Alarms, Scales and Toys

This rechargeable SY4-6 lead acid battery is designed to deliver reliable, long-lasting performance in applications such as alarms, electronic scales and electric toys. Made with high-quality materials and AGM technology, it provides a stable, maintenance-free power source.

Key features

  • Type: Sealed rechargeable lead-acid battery (SLA) with AGM technology.
  • Voltage: 6V.
  • Capacity: 4Ah, suitable for moderate loads and standby applications.
  • Dimensions: 100 mm x 70 mm x 47 mm.
  • Weight: 0,7 kg.
  • Polarity: Positive on the left, with red positive terminal and black negative terminal.
  • Maintenance: Maintenance-free, factory pre-charged for immediate use.
  • Initial current: Less than 1.2A.
  • Operating voltage: Cyclic use 7.2-7.5V, standby use 6.7-6.9V.

Typical applications

This battery is ideal for a wide range of devices that require a reliable rechargeable power source, including:

  • Electric children's ride-on cars and carriers.
  • Uninterruptible power supplies (UPS) for security systems and alarms.
  • LED lights, desk lamps, emergency lights and table lamps.
  • Electronic scales and portable devices such as fans and audio speakers.
  • Electronic instruments, photographic equipment and intercom systems.
  • Access control systems, automatic doors and solar power systems.
  • Communication equipment and other various electronic devices.

Instructions for use

The battery comes pre-charged and ready to use. Make sure to connect the red terminal to the positive pole and the black terminal to the negative pole. Its maintenance-free design makes it easy to use in a variety of applications without the need for constant checks.

Compatibility and performance

Thanks to its AGM technology and compact design, this battery is compatible with multiple devices that require stable, long-lasting power. Its 4Ah capacity and 6V voltage make it suitable for low-consumption applications and standby systems.

Note: This product is currently out of stock. We recommend checking alternative products or contacting our customer service team for more information.

  • Rechargeable lead-acid battery with AGM technology
  • 6V voltage and 4Ah capacity for a range of applications
  • Maintenance-free and factory pre-charged
  • Compact size: 100x70x47 mm and lightweight at 0,7 kg
  • Ideal for alarms, scales, toys and solar power systems

Customer Questions & Answers

What are the exact physical dimensions and approximate weight of the SY4-6 battery, and what is included in the box?

The SY4-6 battery usually measures approximately 70 mm high, 47 mm wide and 101 mm long, with a typical weight between 0.6 kg and 0.8 kg. The box normally includes only the battery; no cables or additional connectors are supplied.

How should the initial charging and periodic maintenance be carried out to maximise this battery's service life?

The SY4-6 battery comes pre-charged from the factory and can be used straight away. To maximise its service life, it is recommended to use a charger specifically for 6 V AGM lead-acid batteries, limiting the current to 1.2 A (0.3C). It is advisable to avoid repeated deep discharges and recharge the battery within 24 hours after discharge. Always store it between 10°C and 25°C.

What safety precautions and regulations apply to the SY4-6 battery during installation and daily use?

This AGM battery is maintenance-free and sealed, but it must be kept away from heat sources above 50°C and must not be opened or punctured. It complies with international standards such as IEC 60896-21/22 and is designed to minimise the risk of leaks. Always use reverse-polarity protection during installation.

Compared with a lithium battery of the same dimensions and voltage, what are the advantages and disadvantages of the SY4-6 lead battery?

Compared with an equivalent lithium battery, the SY4-6 offers a lower initial cost and greater robustness with float charging, but it has lower energy density, higher weight and a shorter service life (usually 200-300 cycles versus 500-1000 cycles for lithium). It requires extra space and weight in mobile applications, but is preferred in stationary systems or where cost is critical.

Does this battery require maintenance?

No, the battery is maintenance-free and comes factory pre-charged for immediate use.

Which devices is this battery suitable for?

It is suitable for alarms, electronic scales, electric toys, LED lights, solar power systems and other portable electronic devices.

What is the battery polarity?

The polarity is positive on the left, with the red positive terminal and black negative terminal at the top.

Is this battery in stock?

This battery is currently out of stock. You can check alternative products or contact customer service.

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