Akkupacks

Rechargeable Batteries

Demands on rechargeable batteries are constantly rising, with more and more energy required in increasingly compact designs. The range of rechargeable battery technologies available on the market provides a good foundation.

Which technology is best suited to which application?

We design and sell customer-specific rechargeable battery packs and individual Lithium-Ion, Nickel-Metal-Hydride and Nickel-Cadmium cells subject for your requirements.

Let us advise you!

Lithium-Ion Cells (Li-Ion)

The Lithium-Ion rechargeable battery technology is the most widely used rechargeable battery technology in the world. More than 98% of all devices with rechargeable battery technology contain a Lithium-Ion battery.

The benefits of Lithium-Ion include its high energy density, low memory effect, a coulomb-efficiency factor of almost 100% and an average nominal voltage of 3.7 volts. Due to their small size, these cells are perfect for the supply of mobile end devices with a high energy demand. Especially in the automobile industry, the importance of Lithium-Ion is growing constantly.

The properties of Lithium-Ion cells, such as temperature sensitivity and cell voltage, vary greatly and are essentially dependent on the electrode material and the electrolyte used.

  • Lithium-polymer rechargeable battery
  • Lithium-cobalt-oxide rechargeable battery (LiCoO2)
  • Lithium-manganese rechargeable battery
  • Lithium-iron-phosphate rechargeable battery (LiFePO4)

Applications:

  • Mobile phones
  • Laptops
  • Camcorders
  • Digital cameras
  • PDAs
  • Cordless screwdrivers
  • Pedelecs, E-bikes, scooters, hybrid vehicles
  • Medical devices
Technical specification LiFePO4 / Li-Ion / Li-Polymer
Nominal voltage 3,2V / 3,6V - 3,7V
Charging end voltage 3,65V / 4,2V
Number of cycles 2000 / 800
Temperature range -20 °C ÷ 65 °C
Energy density 95 - 250 Wh/Kg
Max. discharge rate 1-30 C
Self-discharge < 2% / Monat
Intrinsic safety Mittel

Nickel-Metal-Hydride rechargeable batteries (NiMH)

Nickel-Metal-Hydride rechargeable batteries are the rechargeable alternative for the battery compartment and are often structurally identical to commercial batteries. There are only a few famous manufacturers of NiMH cells in the world, such as Sanyo / Panasonic, FDK, GP and Yuasa. The best known NiMH cell is the eneloop rechargeable battery from Sanyo / Panasonic.

Applications:

  • Small lights, LED lights
  • Toys
  • Remote controls
  • Audio, photo, video devices
  • Electric toothbrushes and shavers
  • Cordless DECT telephones
  • GPS devices
  • Model making
  • Electric tools
  • Electric cars
Technical specification NiMH
Nominal voltage 1,2V
Charging end voltage 1,45V
Number of cycles 300 - 500
Temperature range -40 °C ÷ 85 °C
Energy density 60 - 110 Wh/Kg
Max. discharge rate 2 C
Self-discharge < 25% / Monat
Intrinsic safety Hoch

Nickel-Cadmium rechargeable batteries (NiCd)

Nickel-Cadmium rechargeable batteries are one of the oldest rechargeable battery technologies. Unlike NiMH rechargeable batteries, the benefits of NiCd rechargeable batteries include their better current carrying capacity and their larger temperature range. However, due to the polluting cadmium content, this type of rechargeable battery can only be used in a few areas such as high-current (power tools) and medical applications or emergency lighting. Their intrinsic safety is very good.

Technical specification NiCd
Nominal voltage 1,2V
Charging end voltage 1,45V
Number of cycles > 500
Temperature range -20 °C ÷ 85 °C
Energy density 40 - 60 Wh/Kg
Max. discharge rate ca.10-15 C
Self-discharge < 10% / Monat
Intrinsic safety Hoch
Batteries

Batteries

High-performance energy providers are a guarantee of success. With the right battery-management strategy, you can maximise the operating life of your end device.

Which batteries are suitable for which end devices?

Onni-Industrial sells individual Alkaline cells, as well as customer-specific primary Lithium cells.

We provide competent and cost-conscious advice.

Zink-Carbon Batteries

The classic amongst primary energy stores is the Zinc-Carbon battery. The advantage of this battery over rechargeable batteries is the extremely low self-discharge. These are especially well suited to devices with very low energy consumption (clocks, pacemakers and smoke alarms). However, demands in terms of capacity and performance are eliminating this type of battery.

Lithium-Batteries

Lithium batteries use lithium as electrochemically active material on the negative electrode. Lithium batteries have a very high energy density of up to 300Wh/kg. Another advantage is the very low self-discharge rate that leads to a very long life span of up to 15 years. Lithium batteries are available in several chemical variations. Lithium manganese dioxide (LiMnO2) and lithium thionyl chloride (LiSOCI2) are the most common. Lithium batteries can be used in very cold and very hot environments (-55°C to +150°C).

Alkali-Manganese Batteries (AlMn)

This type of battery withstands high power requirements and constant use. The voltage can be held even under high loads. Alkali-Manganese batteries are more leakproof and can be stored for a longer time without significant loss of power.

Charging technology

Charging technology

In cooperation with our partners, we produce and supply compatible chargers for NiMH and lithium-ion-based rechargeable batteries for any application. You can purchase standard chargers with or without external charging cradles from us instantly at any time.

Talk to us!

Contact

Sales Department Welzheim
Maierhofweg 1
73642 Welzheim

Sales Director:
Uwe Weishaupt
Phone: +49 (0)7182 - 539 63 22
Fax: +49 (0)7182 - 539 63 23
E-Mail: uwe.weishaupt@onni-tec.de

Project Engineer:
Markus Holder
Phone: +49 (0)7182 - 539 76 75
Fax: +49 (0)7182 - 539 63 23
E-Mail: markus.holder@onni-tec.de

Sales Office Munich

Sales Manager:
Alexander Witt
Tel.: +49 (0)8123 - 991 70 94
Fax: +49 (0)8123 - 991 70 93
E-Mail: alexander.witt@onni-tec.de