Wishlist/LiFePO4 Battery

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A new battery type has appeared:
 
A new battery type has appeared:
*http://en.wikipedia.org/wiki/Lithium_iron_phosphate
+
*http://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery
  
 
Advantages:
 
Advantages:
 
*1000+ (dis)charge deep-cycles.
 
*1000+ (dis)charge deep-cycles.
*Low self-discharge; 5% 25 deg. celcius / month
+
*Low self-discharge; 5% / month at 25 deg. celcius
 
*Very electrically robust
 
*Very electrically robust
 
*Very mechanically robust - can literally be nailed without explosion danger.
 
*Very mechanically robust - can literally be nailed without explosion danger.
 
*-30...60 deg. celcius operating
 
*-30...60 deg. celcius operating
 
*a123systems ANR26650M1 3.3V 2.3Ah can be charged in 15 minutes.
 
*a123systems ANR26650M1 3.3V 2.3Ah can be charged in 15 minutes.
 +
*a123systems ANR26650M1 3.3V 2.3Ah cells are laserwelded instead of crimping, which lower water losses and therefore extends celllife.
 +
 +
Test by [http://en.wikipedia.org/wiki/Sandia_National_Laboratories Sandia National Laboratories]:
 +
*September 2008: [http://www.lifebatt.com/sandiareport.pdf lifebatt.com: Sandia report], ( http://www.lifebatt.com/ , http://www.lifebatt.eu/ ).
  
 
Info-links a123systems:
 
Info-links a123systems:
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*http://media.hyperion.hk/dn/a123/123-brief.pdf
 
*http://media.hyperion.hk/dn/a123/123-brief.pdf
 
*http://media.hyperion.hk/dn/a123/packassy/A123packassy.pdf
 
*http://media.hyperion.hk/dn/a123/packassy/A123packassy.pdf
*Pdf-file: http://www.rc-netbutik.dk/getdoc.asp?id=100&md5hash=9810C237586CF6B4325753101E37DAE1
+
*Pdf-file: http://www.rc-netbutik.dk/getdoc.asp?id=100&md5hash=9810C237586CF6B4325753101E37DAE1 Quote: "...Curent test projecting excellent calendar life: 17% impedance growth and 23% capacity loss in 15 [fifteen!] years at 100% SOC, 60 deg. C..."
 
**http://www.rcuniverse.com/forum/m_5921365/tm.htm
 
**http://www.rcuniverse.com/forum/m_5921365/tm.htm
 
**Quote: "...according to our tesing, for 2.3AH high rate LiFe cell, the self-discharge rate is 4% of rated capacity per 28days...Jason's information is pretty close. We rate the cells at 5% cpacity loss per month...."
 
**Quote: "...according to our tesing, for 2.3AH high rate LiFe cell, the self-discharge rate is 4% of rated capacity per 28days...Jason's information is pretty close. We rate the cells at 5% cpacity loss per month...."
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Info-links sunhigh-battery:
 
Info-links sunhigh-battery:
*http://www.sunhigh-battery.com/sdp/426453/4/pl-2390692/0-1538920.html Quote: "...The chemical structure of LiFePO4 used in SUNHIGH battery is very stable. The cycle life is extraordinary. The performance of the SUNHIGH's Fe- Battery is excellent for cycling at high temperature as well as for overcharge and over discharge..."
+
*http://www.sunhigh-battery.com/sdp/426453/4/pd-2390692/4068629-1538920.html Quote: "...The chemical structure of LiFePO4 used in SUNHIGH battery is very stable. The cycle life is extraordinary. The performance of the SUNHIGH's Fe- Battery is excellent for cycling at high temperature as well as for overcharge and over discharge..."
 +
 
 +
 
 +
*Info AA Portable Power Corp:
 +
**Polymer Li-Fe-PO4 Cell: 8790160L 3.2V 10 Ah, 2 C Drain Rate (LFP-8790160L):
 +
**http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=4053
 +
**Quote: "...
 +
**$59.95
 +
**...
 +
**New Generation Polymer Li-Fe-PO4 Battery: High discharging rate, non explosive, lighter weight and much safe
 +
**...
 +
** Energy density: 124 wh/kg
 +
**...
 +
**Dimensions (HxWxL)       8.9mmx92.5mmx163.0 mm
 +
**...
 +
**Weight     258 grams
 +
**..."
 +
 
 +
**Detail Data Sheet: http://www.batteryspace.com/prod-specs/3.2V_10Ah_LiFePo4_poly.pdf
 +
 
 +
**Ask for a suitable flat-pack:
 +
**AA Portable Power Corp: http://www.aaportablepower.com/
 +
 
 +
 
 +
==Traditional (Li-ion (polymer)) lithium-accumulator only handles 300-500 (dis)charge deep-cycles==
 +
 
 +
How to prolong lithium-based batteries:
 +
http://www.batteryuniversity.com/parttwo-34.htm
 +
Quote: "... A lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible...Increasing internal resistance with cycle life and age is typical for cobalt-based lithium-ion, a system that is used for cell phones, cameras and laptops because of high energy density. The lower energy dense manganese-based lithium-ion, also known as spinel, maintains the internal resistance through its life but loses capacity due to chemical decompositions..."
  
 +
[[Category:Battery]]
 
[[Category:Hardware ideas]]
 
[[Category:Hardware ideas]]

Latest revision as of 08:24, 31 December 2008

A new battery type has appeared:

Advantages:

  • 1000+ (dis)charge deep-cycles.
  • Low self-discharge; 5% / month at 25 deg. celcius
  • Very electrically robust
  • Very mechanically robust - can literally be nailed without explosion danger.
  • -30...60 deg. celcius operating
  • a123systems ANR26650M1 3.3V 2.3Ah can be charged in 15 minutes.
  • a123systems ANR26650M1 3.3V 2.3Ah cells are laserwelded instead of crimping, which lower water losses and therefore extends celllife.

Test by Sandia National Laboratories:

Info-links a123systems:

Info-links sunhigh-battery:


  • Info AA Portable Power Corp:
    • Polymer Li-Fe-PO4 Cell: 8790160L 3.2V 10 Ah, 2 C Drain Rate (LFP-8790160L):
    • http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=4053
    • Quote: "...
    • $59.95
    • ...
    • New Generation Polymer Li-Fe-PO4 Battery: High discharging rate, non explosive, lighter weight and much safe
    • ...
    • Energy density: 124 wh/kg
    • ...
    • Dimensions (HxWxL) 8.9mmx92.5mmx163.0 mm
    • ...
    • Weight 258 grams
    • ..."


[edit] Traditional (Li-ion (polymer)) lithium-accumulator only handles 300-500 (dis)charge deep-cycles

How to prolong lithium-based batteries: http://www.batteryuniversity.com/parttwo-34.htm Quote: "... A lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible...Increasing internal resistance with cycle life and age is typical for cobalt-based lithium-ion, a system that is used for cell phones, cameras and laptops because of high energy density. The lower energy dense manganese-based lithium-ion, also known as spinel, maintains the internal resistance through its life but loses capacity due to chemical decompositions..."

Personal tools

A new battery type has appeared:

Advantages:

  • 1000+ (dis)charge deep-cycles.
  • Low self-discharge; 5% 25 deg. celcius / month
  • Very electrically robust
  • Very mechanically robust - can literally be nailed without explosion danger.
  • -30...60 deg. celcius operating
  • a123systems ANR26650M1 3.3V 2.3Ah can be charged in 15 minutes.

Info-links a123systems:

Info-links sunhigh-battery: