The most advanced technology of Global ES series, Valve Regulated Lead Acid batteries make them highly useful in a broad range of application. These batteries are in use of absorptive glassmat separators. Maintenance is unnecessary during the ES batteries' life time and it is completely leakage-proof. The use of high-purity calcium alloy maximizes the longevity of ES batteries. So, you will be assured with ES batteries' excellent performance in any circumstance.