Skip to main content
Hello, Sign in

Shop By Department

Help & Settings

Recent Searches

Shipping from €4.99
30-day returns
100% secure payment
Quality guarantee

High-Performance Rechargeable 12V 40Ah Sealed Lead Acid Battery Sy40-12

Brand: Songyuan

67.65

VAT included (Ex VAT: 55.00 €)

Volume Discounts

Quantity Price Save
2+ 50.77 € -25%
10+ 49.19 € -27%
20+ 44.96 € -34%
Only 5 left in stock - order soon!
Standard delivery Fri, May 1 - Tue, May 5
Express delivery Wed, Apr 29 - Thu, Apr 30
30-day returns
Free returns within 30 days
Secure transaction
Visa Mastercard PayPal Apple Pay Google Pay Bizum
Share:
Free Delivery Shipping from €4.99
Easy Returns 30 day return policy
Secure Payment 100% secure checkout
Quality Guarantee Original products only

Rechargeable 12V 40Ah Sealed Lead Acid Battery Sy40-12

This rechargeable sealed lead acid battery offers superior performance and a long service life thanks to its high-quality materials and advanced technology. Designed for demanding applications, it is ideal for alarm systems, UPS (Uninterruptible Power Supply) systems, electric trolleys, electric chairs, electric scooters and other electronic applications.

Main features:

  • Technology: Rechargeable with SLA (Sealed Lead Acid) and AGM (Absorbent Glass Mat) technology, ensuring safety and efficiency.
  • Voltage: 12V, suitable for a wide range of devices and systems.
  • Capacity: 40Ah, offering extended runtime for continuous use.
  • Dimensions: 195mm long x 165mm wide x 167mm high, compact and easy to install.
  • Weight: 13,8 kg, balancing robustness and ease of handling.
  • Maintenance: Maintenance-free, avoiding the need for constant checks.

Typical uses:

  • Residential and commercial alarm systems.
  • UPS for backup power in critical electronic equipment.
  • Electric trolleys and scooters for personal mobility.
  • Electric chairs for people with reduced mobility.
  • Other electronic applications that require a reliable and long-lasting power source.

Compatibility and recommendations:

The 12V 40Ah Sy40-12 sealed lead acid battery is compatible with a wide range of devices that require a stable 12 volt power supply and high capacity. Its maintenance-free design makes it ideal for installations where access is limited or a durable and reliable solution is required.

Important note: This product is not shipped to the Balearic Islands or via DHL Express.

  • Rechargeable sealed lead acid battery with SLA and AGM technology
  • 12V voltage and 40Ah capacity for extended use
  • Maintenance-free for added convenience
  • Compact dimensions: 195x165x167 mm
  • 13,8 kg weight, easy to handle and install
  • Ideal for alarms, UPS, trolleys and electric chairs
  • High durability and guaranteed performance

Customer Questions & Answers

What are the main advantages of a sealed AGM lead-acid battery like the SY40-12 compared with other battery types?

Sealed AGM (Absorbed Glass Mat) batteries offer greater safety as they are maintenance-free and spill-resistant, as well as good cycle performance for backup or moderate traction applications. Compared with conventional lead-acid batteries, they have lower self-discharge and better acceptance of fast charging. However, they are heavier and bulkier than lithium options for the same capacity.

What type of charger or charging system is compatible, and what voltage and current are recommended?

It is recommended to use a charger designed for 12 V AGM lead-acid batteries, set to a maximum charging current of between 8 A and 12 A (0.2-0.3C relative to 40 Ah), with a charge cut-off voltage of 14.4-14.7 V. A higher charging current or an unsuitable voltage can shorten the product's service life.

What service life and number of cycles can be expected under normal use conditions?

Under standard conditions (50% DOD discharge at 25 °C, moderate daily cycles), the SY40-12 usually offers between 300 and 500 cycles. Service life can vary considerably depending on depth of discharge, ambient temperature and frequency of use, so it is recommended to consult the manufacturer's technical tables for exact figures.

What safety standards does this battery comply with, and are there any special considerations for transport or installation?

The battery complies with safety standards applicable to sealed VRLA batteries (for example, IEC 60896-21/22). Due to its weight and the presence of hazardous materials, it must be transported upright and protected from strong impacts. It should not be installed in fully sealed environments, and minimum ventilation must be ensured to prevent the build-up of residual gases in the event of overcharging.

What applications is this battery suitable for?

It is ideal for alarms, UPS, electric trolleys, electric chairs, electric scooters and other electronic applications that require 12V and 40Ah.

Does the battery require maintenance?

No, this battery is sealed and maintenance-free, which makes it easy to use and extends its service life.

What are the battery dimensions and weight?

The dimensions are 195mm x 165mm x 167mm and it weighs 13,8 kg.

Can it be shipped to the Balearic Islands?

No, this product is not shipped to the Balearic Islands or via DHL Express.

Write a customer review

Customers who bought this item also bought

67.65 € In Stock
just purchased this item
High-Performance Rechargeable 12V 40Ah Sealed Lead Acid Battery Sy40-12 High-Performance Rechargeable 12V 40Ah Sealed Lead Acid Battery Sy40-12
67.65 €