Which of these 2 used Lenovo batteries is the better pick?

[SkiBunny]

Have a choice of two used 9-cell batteries for same price... Which one would you pick?

1) 6 cycles, 84.45 full capacity (of 93.6 design cap), first-used 2011/05, made by LGC

2) 154 cycles, 85.86 full capacity (of 93.96 design cap), first-used 2011/10, Panasonic

[ajkula66]

Panasonic.

[Cigarguy]

Without knowing the history, Panasonic.

[SkiBunny]

^
Even though the LGC has only 6 cycles compared to 154 cycles for the panasonic?

[Cigarguy]

Again unless you know the history, I would not trust cycle count. It can be deceptive. A laptop always attached to an external dock and never ever allowed to discharge or discharged a bit then recharge again in a very hot environment is not good. That's only a few scenario of many.

What I would look for is age (about the same), remaining capacity (about the same but Pany is 6 months newer), manufacturer (prefer Panasonic), and history (unknown). So given those options, I'd say Pany.

[RealBlackStuff]

Panasonic!
You can't beat'em

Look at these figures, for a bunch that I bought in one lot earlier this year (most of them already sold with FrankenPads)

BATTERY	         	                holds	from Wh	%	Cells	cycles        	Mfg	        First use

Y	1	Panasonic		69.48	 84.24	82.48 	9	209		2009-11-20	2009-12
Q	1	Panasonic		71.24	 84.24	84.57 	9	167		2009-08-25	2010-04
AA	1	Panasonic		71.86	 84.24	85.30 	9	164		2009-11-11	2009-12
S	1	Panasonic		71.96	 84.24	85.42 	9	300		2009-11-20	2009-12
M	1	Panasonic		72.01	 84.24	85.48 	9	239		2009-11-20	2009-12
X	1	Panasonic		72.18	 84.24	85.68 	9	232		2009-11-20	2010-04
N	1	Panasonic		72.43	 84.24	85.98 	9	193		2009-11-20	2009-12
W	1	Panasonic		72.87	 84.24	86.50 	9	51		2009-11-11	2009-12
O	1	Panasonic		72.95	 84.24	86.60 	9	114		2009-11-20	2009-12
P	1	Panasonic		73.62	 84.24	87.39 	9	56		2008-01-28	2008-03
U	1	Panasonic		75.55	 84.24	89.68 	9	122		2009-11-15	2010-04
J	1	Panasonic		75.84	 84.24	90.03 	9	66		2009-11-28	2009-12
R	1	Panasonic		76.61	 84.24	90.94 	9	403		2009-11-15	2010-04
K	1	Panasonic		76.90	 84.24	91.29 	9	146		2009-11-15	2010-02
L	1	Panasonic		76.95	 84.24	91.35 	9	167		2009-11-15	2009-12
H	1	Panasonic		77.39	 84.24	91.87 	9	85		2009-11-20	2009-12
T	1	Panasonic		78.59	 84.24	93.29 	9	75		2009-11-15	2010-11
Z	1	Panasonic		82.69	 84.24	98.16 	9	31		2009-11-11	2010-10
V	1	Panasonic		82.74	 84.24	98.22 	9	7		2009-11-20	2009-12

[SkiBunny]

Thanks everyone, I bought the used panasonic battery with 154 cycles.