Eneloop

A rechargeable NiMH battery (rechargeable battery) with low self-discharge (english low self -discharge NiMH battery, or short- LSD - NiMH) is a special NiMH battery variant which has over previous types is characterized by a significantly reduced self- discharge. The high self-discharge made ​​previously for use in equipment, the long time to be in readiness (eg remotes or torches), largely impractical. A workaround was to trickle charge the batteries were kept permanently by low power in a charged state. This could take place directly with the charger as well as in some consumers.

The new generation of rechargeable batteries is only in the most common types available, eg, Mignon ( AA), micro (AAA), Baby ( C), Mono ( D), 9 -volt block ( 1604D or PP3).

History

Leading the way was the Japanese company Sanyo eneloop with the introduced in November 2005 battery type, which was further improved in 2009 (2nd generation; recognizable by the A at the end of the type designation, eg HR 3UTGA instead 3UTG HR and HR 4UTGA instead of HR - 4UTG and additionally on the 2nd generation of a solid crown pictured). In October 2012 it is the 3rd generation eg HR 3UTGB (AA - size) or HR 4UTGB (AAA size ) and an additional line in the printed came on the market, recognized by the B at the end of the type designation, previously solid crown, which was introduced in the 2nd generation. Sanyo advertises it with up to 1800 recharge cycles ( instead of 1500 in the 2nd generation) and further optimized (reduced ) self-discharge.

Meanwhile, however, are numerous similar products of other manufacturers in the market. 2011 brought Sanyo Eneloop XX also with his / Pro Series a battery with even higher capacity (2500 mAh) on the market, but also has much less charge cycles (500) and a return to higher self-discharge. Since February 2013, the second generation of the eneloop XX is available in Germany, which has a 50 mAh higher capacity and the self-discharge has been reduced by 10 %, which after a year still has 85 % of the charge. In addition to the AA variant ( model HR- 3UWXB ) now is also a variant with AAA 950 mAh (900 mAh min. ) Available (Model HR- 4UWXB ).

Special

The special thing about these batteries is a very low self-discharge. The charge level of batteries usually begins immediately after loading end by the self-discharge to decline, why electronically controlled chargers then perform with low power, usually in the form of short pulses ( trickle charging ), a trickle charge. In factory fresh ordinary (ie, not LSD) batteries the charge loss in the first 24 to 48 hours is already at about 10 percent, and then between 15 and 50 percent per month. The self-discharge of used batteries but can also be more than 50 percent per week, even if the batteries otherwise still have their rated capacity. In contrast, LSD NiMH batteries lose in the first month is only 15 percent and even then only about 15 percent per year to their charge (at 20 ° C ambient temperature). This is achieved by a new super-lattice alloy ( Superlattice Alloy ) as a hydrogen- binding material for the cathode of NiMH batteries and a modified nickel alloy for the anode. Both reduce the chemical decay and prevents the self-discharge before. The disadvantage is the slightly lower capacitance. While conventional NiMH batteries (Mignon) are available to about 3000 mAh AA format, have the same size LSD NiMH batteries only about 2000 mAh. Only 2009 were presented by the German " Ansmann AG" maxE Plus and in September 2010 by Sanyo eneloop XX (HR- 3UWX - 4BP ) LSD NiMH batteries whose capacity with 2500 mAh (current manufacturer) conventional to the capacity of NiMH batteries zoom ranges, but at a somewhat higher self-discharge than in "normal" ( standard ) LSD batteries.

Long-term tests and user reports confirmed the low self-discharge. The now large amount of imitation products confirmed the success of the LSD variant of the NiMH batteries.

LSD NiMH batteries are already charged when you buy (before ) and thus can be used immediately, but this is not recommended if you use single battery in the set due to the mostly unequal initial charging stands. To recharge, any "simple" standard charger for NiMH batteries are used, although intelligent, microprocessor-controlled chargers battery life significantly extend ( can ).

The voltage profile during discharge has been optimized for LSD NiMH batteries according to the manufacturer's instructions for use in digital equipment. This means that their discharge curve is flatter and thus also at low load levels even with high inrush still prevails the necessary operating voltage, since LSD NiMH batteries have a very low internal resistance. This explains why even at high current draw and low charge level, a lower voltage drop than conventional NiMH batteries occurs.

The disadvantage of lower capacity - even to nominally higher-capacity battery - does not fall as much weight as turn off the device until much later than conventional batteries. In other words, from the capacity (I × t in Ah ) of the battery, a larger part of energetically (U × I × t Wh ) is available. However, different from conventional batteries discharge curve can cause charge indicators - for example, in digital cameras - Show possibly too high a residual charge. Also worth mentioning is the low-temperature resistance, for example, the Eneloops, was their idea in view of their former product launch in Australia therefore in an ice bar.

NiMH products with low self-discharge

Meanwhile, other vendors have pre-loaded and low selbstentladende NiMH batteries in the program:

  • AccuCell AccuCell ready2use NiMH battery
  • AccuPower AccuLoop
  • ACTIV ENERGY ( Aldi trademark) Ready To Use
  • AgfaPhoto Direct Energy
  • AmazonBasics Pre-charged Ni -MH batteries
  • Ansmann maxE
  • Apple Battery Charger Kit ( umgelabelte eneloops )
  • Camelion Always Ready
  • CAP standby
  • Compit Accu- battery
  • Conrad energy Endurance
  • Duracell Active Charge
  • Duracell Pre -charged
  • Duracell Stay Charged
  • Energizer NiMH, 1000x rechargeable
  • GP ReCyko ( original manufacturer)
  • Hahnel Synergy
  • Hama Ready For Power ( Ready4Power )
  • Kodak Pre- Charged
  • Maha Powerex Imedion
  • Minwa Electronics eneReady
  • NEXcell EnergyON
  • Panasonic Rechargeable Evolta Stay Charged and
  • Panasonic Infinium
  • Philips Multi- Life Ready to use
  • Powergee EVOLUTION
  • Rayovac hybrid
  • RUBIN ( Rossmann trademark) Ready To Use
  • Sanyo (Panasonic) eneloop ( original manufacturer)
  • Sony Cycle Energy Blue
  • Suppo Enekeep
  • SWISSBATTERIES accubattery
  • Tecxus Ready to use
  • Tensai Ready to Use
  • Titanium Enduro
  • Tka Aeonium Power Cell
  • TRONIC ( Lidl trademark) Ready To Use
  • Uniross Hybrio
  • Vapextech Instant
  • VARTA READY TO USE
  • Xavax Battery Like
  • XCell Innovate
  • Yuasa eNiTIME ( original manufacturer)

These designations are not always are separate developments, but mostly under their own brand name of a product marketed (OEM ) manufacturer. Except Sanyo who do not license their own technology so far, GP and Yuasa have developed a similar technique. For all other providers are currently about batteries either of these two manufacturers.

Amazon.com Gillette (brand) Gold Peak Panasonic (brand) Spectrum Brands GS Yuasa
308423
de