gearhead5 Offline Upload & Sell: Off
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I recently needed to purchase some low-discharge batteries, but couldn't decide whether to buy Imedion or Eneloop. A web search turned up a couple of battery tests which indicated that the Imedion was the better battery. Not only does the Imedion have a better charge retention than the Eneloop, but it also has a higher capacity. In addition the measured capacity of the Imedion exceeds its advertised nominal capacity, but the measured capacity of the Eneloop is less than it's advertised capacity. Here are the tests:
http://servaas.com.au/blog/
and
Sorted summary capacity mAh data:
AA low self-discharge NiMH
battery initial 1-hour 1-week 4-week 3-month 3m/1h%
IME 1831 2186 2053 2008 1940 89% MAHA IMEDION 2100 mAh
KPC 1723 2124 2021 1950 1874 88% Kodak Pre-Charged 2100 mAh
GRY 1687 2116 1992 1938 1872 88% GP Recyko 2100 mAh
DPC 1515 2010 1906 1857 1821 91% Duracell Precharged 2100 mAH
HYB 1619 2026 1918 1870 1808 89% Hybrio by Ultralast 2100 mAh
AMX 1645 2078 1936 1856 1784 86% Ansmann Max-e 2100 mAh
ENO 1189 2017 1904 1854 1768 88% Nexcell EnergyON 2000 mAh
ENL 1438 1980 1847 1811 1746 88% Eneloop by Sanyo 2000 mAh
RHY 1738 2021 1867 1795 1716 85% Hybrid by Ray-O-Vac 2100 mAh
RSK 1505 2024 1868 1808 1705 84% Radio Shack pre-charged 2000 mAHr
ACC 1737 2022 1899 1790 1696 84% Acculoop 2100 mAh
TPE 1009 1932 1847 1795 1590 82% Titanium Power Enduro 2100 mAh
AA ordinary NiMH
battery initial 1-hour 1-week 4-week 3-month 3m/1h%
PW20 * 1963 1804 1677 1259 64% Powerex 2000 mAh NiMH
LC20 * 1727 1595 1498 1212 70% LaCrosse 2000 mAh NiMH
KOD * 2072 1917 1673 1012 49% Kodak 2100 mAh NiMH
SY23 * 2091 1899 1615 888 42% Sanyo 2300 mAh NiMH
TI26 * 2001 1745 1495 781 39% Titanium 2600 mAh NiMH
RAY * 1579 1471 1273 605 38% Ray-O-Vac 1600 mAh NiMH
NEX * 1239 1211 978 533 43% NEXcell 2200 mAh NiMH
TI24 * 2109 1859 836 0 0% Titanium 2400 mAh NiMH
-500 hours capacity as delivered
0 hours zero-time capacity after at least three cycles
168 hours--one-week capacity
672 hours--four-week capacity
2184 hours--three-month capacity
http://i6.photobucket.com/albums/y231/PeterAStoll/photogeek/batteries/AA_cap_time_0.gif
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