BATTERY CHARACTERISTICS VRLA vs Lithium-ion

Lithium-ion batteries are emerging as an alternative to VRLA BENEFITS (valve-regulated lead-acid) technologies in the data center.

Vertiv has significant experience with The below chart offers a brief comparison. lithium-ion batteries. KEY CHARACTERISTIC LEAD-ACID (VRLA) LITHIUM-ION* yyTesting since 2011 Energy Density Moderate High Lifespan Medium Long (approx. 4X) yy Installation success Weight High Low yy Compatible with many Liebert® Footprint required Large Small-Moderate UPS systems Recharge Moderate Fast Maintenance cost Moderate Low Cooling required Moderate Low Longer life Battery Monitoring Optional Optional Battery Management Optional Built-in x4 Transport concerns Flexible Ground

VRLA LIB Disposal/Recycle Widespread Disposable, not yet recyclable First cost Moderate High

Saves space * Batteries perform differently depending on their chemistry. This chart summarizes 70% various types. Note our preferences for critical use (gray).

Data Center Approved Cell Phones VRLA LB 280

Weighs less 240

60% 200

VRLA LB 160 Wh/kg 120 Saves cooling cost

70% 80

kWh kWh 40 VRLA LIB

0 Lead Acid NiCd NiMH LTO LFP LMO NMC LCO NCA Chemistry

Key: LTO (Lithium Titanate), LFP (Lithium Iron Phosphate), LMO (Lithium Manganese Oxide), NMC (Lithium Nickel Manganese Cobalt Oxide), LCO (Lithium Cobalt Oxide), NCA (Lithium Nickel Cobalt Aluminum Oxide). Chart data is copyrighted by BatteryUniversity.com and provided with permission.

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SL-70120 (R12/17) 1