NiMH-akkumulatorer med lav selvafladning: Forskelle mellem versioner

Genopladelige LSD NiMH celler
Energi/vægt	30–80 Wh/kg
Energi/størrelse	140–300 Wh/L
Max.effekt/vægt	250–1000 W/kg
Opladning/afladningseffektivitet	66%
Pris/energi	0,1 Wh/kr
Selvafladningshastighed	3,7%/måned (temperaturafhængigt)
Cyklusholdbarhed	500–1000
Nominel cellespænding	1,2V
	v; d; r;

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Versionen fra 27. maj 2012, 13:04

I 2005-2007 kom der flere NiMH-akkumulatorer med lav selvafladning (LSD NiMH - low self-discharge NiMH battery) også kaldet Ready-to-use-batterier, fordi de netop er klar til brug lige efter udpakning uden yderligere opladning. LSD NiMH-akkumulatorer fås i størrelserne AAA, AA, C og D. De sete C og D LSD NiMH har dog kun haft samme kapacitet som AA-cellerne.

En af de få LSD-NiMH E-blok akkumulatorer der findes er Uniross Hybrio 8,4V ("9V") på 200 mAh. ^[1]

Kendetegn

Det specielle ved denne nye type genopladelige batteri er, at det har en meget lille selvafladning. Hvor almindelige genopladelige NiMH-batterier forholdsvist hurtigt taber strømmen, også når de ikke bruges, så taber den nye type betydeligt mindre.

Over en periode på 6 måneder holder LSD NiMH på op til 90% af opladningen - 80% er realistisk, hvilket svarer til 20% tab. ^[2] Men selvafladningen er stærk temperaturafhængig.

Almindelige NiMH-akkumulatorer taber 5-20% den første dag og taber derefter eksponentielt ca. 0,5-4% af ladningen per dag afhængig af opbevaringstemperaturen ^[3] ^[4] ^[5] ^[6] ^[7], 17% tab per måned svarer til ca. 0,6% per dag: ( $100*(1-{\sqrt[{30}]{1-0,17}})$ %), eller ca. mellem 0,5-1% om dagen. LSD NiMH derimod taber som tidligere nævnt ca. 20% over 6 måneder, hvilket svarer til ca. 0,12% per dag: ( $100*(1-{\sqrt[{180}]{1-0,20}})$ %). ^[2]

NiMH-akkumulatorer med lav selvafladning kan langt de fleste steder erstatte brunstenbatterier og alkalinebatterier i f.eks. ure^[8], transistorradioer, kameraer, fjernbetjeninger,...

Liste over NiMH-akkumulatorer med lav selvafladning

Sorteret efter firma og dernæst produkt:

AccuPower AccuLoop
Ansmann maxE
Conrad Electronic Endurance
Duracell ActiveCharge
Duracell Pre-charged
Gold Peak ReCyko
Hähnel Synergy
Kodak Pre Charged
Maha Powerex Imedion
Nexcell EnergyON
Panasonic INFINIUM^[9]
Panasonic R2
Rayovac Hybrid
(GE/)Sanyo Eneloop^[8]^[10]^[11]^[12]
Sony CycleEnergy
Titanium Enduro
Tecxus Ready to Use
Uniross Hybrio^[2]
VARTA Consumer Batteries Ready2Use
Vapextech Instant

Kilder/referencer

^ uniross.com: 9V 200 Series Hybrio Citat: "...Advanced HYBRIO technology batteries that can be used straight from the pack and have extremely low self discharge, so stay charged for longer whilst not in use..."
^ ^a ^b ^c September 25th 2006, Uniross Hybrio hybrid battery Citat: "...Charge remaining when used : 80 % after 6 months...Useful life : 5 years..."
^ Nickel-Metal Hydride (NiMH) Battery Charger and Battery Pack. User’s Manual. Sea-Bird Electronics, Inc. Citat: "...NiMH batteries self-discharge up to 20% in the first 24 hours after charging, then as much as 15% per month. Self-discharge is highly temperature dependent. NiMH batteries self discharge about three times faster at 40 °C than at 20 °C. Age also effects self discharge. Older battery packs self-discharge faster than new ones..."
^ epanorama.net: Battery Power Supply Page Citat: "...A NiMH battery can lose up to 2% of its charge per day sitting on the shelf..."
^ Battery Nurse: VCS, Voltage Control System Citat: "...NiMh batteries tend to self-discharge at 3-4% of capacity per day..."
^ Choosing the Right Battery Pack Citat: "...Nickel Metal Hydride (NiMh) Approx 1% per day if unused...."
^ gpbatteries.com: FAQ Citat: "...18. What is the self-discharge rate of NiMH batteries?...In general, the rate of self-discharge ranges from 15% to 20% per month at room temperature..."
^ ^a ^b stefanv.com: Review: Testing Sanyo's Eneloop Rechargeable Battery Citat: "...Eneloop cells can be charged in any normal slow or fast charger designed for regular NiMH cells...Eneloops are also suitable for long-running devices like this battery operated clock...."
^ dcviews.com: Panasonic launches long-lasting Infinium rechargeable batteries
^ Graf over afladning
^ SANYO Eneloop - Danmark
^ SANYO eneloop - Europa

[1] uniross.com: 9V 200 Series Hybrio Citat: "...Advanced HYBRIO technology batteries that can be used straight from the pack and have extremely low self discharge, so stay charged for longer whilst not in use..."

[NiMH_Hybrio-2] September 25th 2006, Uniross Hybrio hybrid battery Citat: "...Charge remaining when used : 80 % after 6 months...Useful life : 5 years..."

[3] Nickel-Metal Hydride (NiMH) Battery Charger and Battery Pack. User’s Manual. Sea-Bird Electronics, Inc. Citat: "...NiMH batteries self-discharge up to 20% in the first 24 hours after charging, then as much as 15% per month. Self-discharge is highly temperature dependent. NiMH batteries self discharge about three times faster at 40 °C than at 20 °C. Age also effects self discharge. Older battery packs self-discharge faster than new ones..."

[4] rama.net: Battery Power Supply Page Citat: "...A NiMH battery can lose up to 2% of its charge per day sitting on the shelf..."

[5] Battery Nurse: VCS, Voltage Control System Citat: "...NiMh batteries tend to self-discharge at 3-4% of capacity per day..."

[6] Choosing the Right Battery Pack Citat: "...Nickel Metal Hydride (NiMh) Approx 1% per day if unused...."

[7] tteries.com: FAQ Citat: "...18. What is the self-discharge rate of NiMH batteries?...In general, the rate of self-discharge ranges from 15% to 20% per month at room temperature..."

[stefanv-8] stefanv.com: Review: Testing Sanyo's Eneloop Rechargeable Battery Citat: "...Eneloop cells can be charged in any normal slow or fast charger designed for regular NiMH cells...Eneloops are also suitable for long-running devices like this battery operated clock...."

[9] views.com: Panasonic launches long-lasting Infinium rechargeable batteries

[10] Graf over afladning

[11] SANYO Eneloop - Danmark

[12] SANYO eneloop - Europa

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 I 2005-2007 kom der flere '''NiMH-akkumulatorer med lav selvafladning''' ('''LSD NiMH''' - ''low self-discharge NiMH battery'') også kaldet Ready-to-use-batterier, fordi de netop er klar til brug lige efter udpakning uden yderligere opladning. LSD NiMH-akkumulatorer fås i størrelserne AAA, AA, C og D. De sete C og D LSD NiMH har dog kun haft samme kapacitet som AA-cellerne.
+En af de få LSD-NiMH E-blok akkumulatorer der findes er Uniross Hybrio 8,4V ("9V") på 200 mAh.
+<ref>[http://www.uniross.com/eu/product_info.php?products_id=406 uniross.com: 9V 200 Series Hybrio] Citat: "...Advanced HYBRIO technology batteries that can be used straight from the pack and have extremely low self discharge, so stay charged for longer whilst not in use..."</ref>
 == Kendetegn ==