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Shorai LFX18 V Deka ETX14, Constant draw stress test!

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Published on Mar 18, 2012

The made up terms, "PBEQ" that Shorai uses to describe its batteries, i.e. "CCA PBEQ" and "AH PBEQ", are NOT equivalent to CCA and AH listed for lead/acid batteries.
For race use LiFePo4 batteries are a no brainer because they save so much weight.

For adventure riding, you need to buy a much more expensive and larger LiFePo4 battery then Shorai was listing as of 3/18.12, to have an equivalent time that you can draw power with the engine off and still start your bike. The same is true of "CCA PBEQ" with the Shorai battery listed. At no point did the Shorai LFX18 270 CCA PBEQ battery come close to cranking the test bike as fast or with as little voltage drop as the Deka 220 CCA ETX14.
I am annoyed with the deception in Shorais FAQ and specifications / application table.
The raw results:
START --- KEY ON TIME --- SHORAI LFX18 --- DEKA ETX14
1 ---------- 0 minutes on ------- 8.976 volts min ------- 0.303 volts min
2 ---------- 5 minutes on ------- 8.870 volts min ------- 9.943 volts min
3 --------- 10 minutes on ------- 8.710 volts min ------- 9.914 volts min
4 --------- 15 minutes on ------- 8.652 volts min ------- 9.585 volts min
5 --------- 20 minutes on ------- 7.892 volts min ------- 9.244 volts min
6 --------- 25 minutes on ------- 6.964 volts min ------- 9.188 volts min
7 --------- 28/30 minutes on -- 5.274 volts/fail ------- did not log, but enough
8 --------- 30 minutes on, 5 rest - 5.142 volts/fail
8 --------- 35 minutes on ------------------------------------- 8.151 volts min
9 --------- 40 minutes on ------------------------------------- 2.959 volts/fail
10 -------- 40 minutes on, 5 rest -------------------------- 6.052 volts min
11 -------- 40 minutes on 10 rest ------------------------- 7.482 volts min
12 -------- 40 minutes on 15 rest -------------------- didn't log but cranked nice
Finished test cause the DEKA killed the Shorai and I was getting bored

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