Carbon battery

Product catalog summary

Introduction to Carbon Battery Technology
Carbon batteries, unlike lithium and standard lead-acid batteries, offer a significant improvement in discharge capacity and charging time. The addition of carbon additives reduces sulfatization, allowing faster charging compared to traditional lead-acid batteries. This makes them suitable for applications requiring partial state of charge (PSOC), enhancing cycle rates significantly.

Specifications
The document outlines the specifications of two carbon battery models, 12ET70PC and 12ET120PC. Both have a nominal voltage of 12V, with capacities of 60Ah and 100Ah respectively. They are designed to last over 3000 cycles at 70% depth of discharge (DoD) and have a design life of 15 years at 25°C. The batteries comply with standards IEC60896-21/22:2004, BS6290-4, and Eurobat, and are suitable for installation compliant with EN50272-2.

Performance and Design Life
The capacity test curve and temperature effect on battery design life are presented, showing the number of cycles and discharge capacity at various temperatures. The temperature range for optimal performance is between -20°C and 55°C.

Dimensions and Weight
The dimensions and weight for each model are provided: 12ET70PC measures 350x165.5x175 mm and weighs 25.5 kg, while 12ET120PC measures 350x172x275 mm and weighs 45 kg.

Constant Current Discharge Data
Data is provided for various end voltages and discharge times, illustrating the performance of the batteries under different conditions.

Advantages of Carbon Batteries
Carbon batteries are more cost-effective than lithium batteries, do not require special measures for transport or storage, and have a high recycling rate of 97%. They operate efficiently over a wide temperature range without needing a cooling system, making them a reliable and sustainable energy storage solution.

Catalog excerpts

Japanese Technology THE REVOLUTIONARY ENERGY STORAGE Unlike lithium batteries standard lead acid batteries have a big discharge capacity (up to C3*). Indeed, a much longer charging time (up to 10 hours, =0,1) must be accepted to prevent sulfatization which would shorten the lifetime of the battery. The new lead carbon technology provides a solution for this problem: Using carbon additives guarantees much less sulfatization of the negative electrode. Thus, the battery can be charged faster than a standard lead acid battery. Modern lithium battery sytems can also be charged within less than an hour, but the discharge capacity is very low: It must not exceed 50-70% of the battery capacity (= C0,5-07). The fast charging is a significant progress in lead carbon technology, since the charging current for the daily cycle mode can be adjusted at 20-40% of the battery capacity (= 0,2-0,4C). Therefore, it is possible to recharge a discharged battery within several hours. Moreover, the lead carbon battery is ideal for partial state of charge (PSOC) applications. Hereby the cycle rate of the battery increases several times in comparison with the standard lead acid battery. Despite its heavier weight and bigger volume per kilowatt hour the lead carbon battery is more cost effective than the lithium battery. In terms of security the lead battery is tried and tested for a long time and has no competitors. For transport, storage and usage no special measures are required. Due to its carbon additive, The lead carbon battery is suitable for a much bigger temperature range than the standard lead acid battery. Unlike lithium batteries it doesn’t need a cooling system. The recycling rate of 97% is one more pro argument for the lead carbon battery, since the recycling of lithium batteries remains an unresolved problem.

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