Nanocarbon Technology

GS Yuasa Corporation developed an advanced Nano-Carbon Lead Acid battery, the new SLR-1000.  The 2-volt Advanced Lead battery provides an unprecedented 5000 cycles at 70% depth of discharge!

Engineered for deep cycle aplications where high cycle life is require, such as energy storage and renewable energy applications. The battery uses Advanced Nano-Carbon technology to deliver exceptional performance:

  1. Extraordinary Long Cycle-Life
  2. Advanced Nano-Carbon Technology
  3. Compact and Installation space efficiency
  4. Large Capacity
  5. Inherently Safe

SLR Batteries Advanced Nanocarbon Deep Cycle Battery

The SLR Series is designed for high cycle applications using GS Yuasa’s Advanced Lead Nanocarbon battery technology. A Nanocarbon additive accelerates the reaction of active material to reduce sulfation. This leads to increased charging efficiency, exceptional PSOC performance, and higher capacity retention over the battery life. The product utilizes GS Yuasa’s HT X Alloy™ for high heat, long life performance. The SLR product line provides 19 years cycle life when tested to IEC 61427. The product is suitable for back-up applications as well as deep cycle.


SLR Size and Terminal
SLR Charateristic SLR_CapacityTest

SLR1000-2 Battery Charging Efficiency

Recommended normal charging is three stage constant current.

  • Bulk:                      0.2CA (200A) MAX, Constant Current Charge up to 2.4VPC
  • Absorption:        0.1CA (100A) MAX, Constant Voltage Charge 60-90 mins
  • Float Application: Not Applicable
    • Equalization:      0.025CA (25A) MAX Constant Voltage Charge 2.8VPC for 3 hours
      • Recommended equalization charge frequency (whichever comes first):
        • Once per month or,
        • When discharge amount reaches 3.5 – 5 times of rated capacity or
        • Longer if individual cell voltages are monitored

Maximum DOD: 70%DOD/30%SOC
Recommended DOD: 50%DOD/50%SOC
Example Charge and Discharge Cycle:  Most Chargers have charging current limits on average 120A

        • Discharge condition: DOD70% (0.1CA*6h)
        • Charging condition:
          • Normal charge:
            • 0.1CA for 6h, estimated 90%SOC
          • Equalization charge:
            •  0.025CA for 2.5h after charged (to 104% of rated capacity)

Efficiency of discharge and charge:

      • Approximately 88% at normal charge condition
      • Approximately 83% at equalization charge condition.
SLR Technical Overview

Extraordinary Long Cycle-Life

SLR-1000 battery is designed to meet the high cycle life requirements of energy storage systems. This battery is capable of delivering 5000 cycles at 70% Depth of Discharge (DOD).

Advanced Nano-Carbon Technology

The SLR-1000 features Advanced Nano-Carbon technology which allows the battery to provide exceptional cyclic performance. This technology has been deployed by GS YUASA in a variety of deep cycle, high cycle life Energy Storage applications.

Compact and Installation space efficiency

The SLR-1000 features modular unit construction and can be easily scaled up for large energy storage projects. The battery also features front facing terminals for easy maintenance.

Large capacity

The SLR-1000 battery provides very large capacity (1000Ah/cell).

Inherently Safe

The SLR-1000 is classified as a Non-Spillable, Valve regulated, Maintenance free (no topping up) battery under UN2800. The SLR-1000 is also a UL recognized system component.