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  • Managing 12 Volts: How to Upgrade, Operate, and Troubleshoot 12 Volt Electrical Systems

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Buy from Amazon $19.95$4.02 $15.63 $11.25 $6.88 $2.50 Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul 2014 2015 2016 $15.83, Oct 5 - Jan 13$15.90, Jan 13 - Mar 26$16.04, Mar 27 - May 8$16.04, Apr 18 11:49 am$16.04, Mar 27 - May 8$16.04, Mar 27 - May 8$11.19, May 3 - May 4$9.95, May 3 - May 8$16.04, Mar 27 - May 8$11.09, May 6 - May 7$9.95, May 3 - May 8$16.44, May 9 - Jun 4$10.90, May 9 7:45 am$10.45, May 9 7:45 am$16.44, May 9 - Jun 4$10.72, May 11 3:40 pm$9.95, May 9 - May 13$16.44, May 9 - Jun 4$11.41, May 12 - May 30$9.95, May 9 - May 13$16.44, May 9 - Jun 4$11.41, May 12 - May 30$10.45, May 14 - Jun 1$16.44, May 9 - Jun 4$11.34, May 31 - Jun 6$10.45, May 14 - Jun 1$16.44, May 9 - Jun 4$11.34, May 31 - Jun 6$10.43, Jun 2 - Jun 30$15.90, Jun 4 - Jun 25$11.34, May 31 - Jun 6$10.43, Jun 2 - Jun 30$15.90, Jun 4 - Jun 25$11.33, Jun 7 - Jun 19$10.43, Jun 2 - Jun 30$15.90, Jun 4 - Jun 25$11.41, Jun 21 - Jun 25$10.43, Jun 2 - Jun 30$14.96, Jun 26 - Jul 24$10.96, Jun 26 - Jul 6$10.43, Jun 2 - Jun 30$14.96, Jun 26 - Jul 24$10.96, Jun 26 - Jul 6$7.95, Jul 1 6:38 am$14.96, Jun 26 - Jul 24$10.96, Jun 26 - Jul 6$10.41, Jul 3 4:32 pm$14.96, Jun 26 - Jul 24$10.96, Jun 26 - Jul 6$10.39, Jul 6 - Jul 7$14.96, Jun 26 - Jul 24$10.96, Jul 8 - Jul 25$10.38, Jul 8 3:23 pm$14.96, Jun 26 - Jul 24$10.96, Jul 8 - Jul 25$10.35, Jul 11 - Jul 12$14.96, Jun 26 - Jul 24$10.96, Jul 8 - Jul 25$10.34, Jul 13 10:52 pm$14.96, Jun 26 - Jul 24$10.96, Jul 8 - Jul 25$10.30, Jul 16 12:41 pm$14.96, Jun 26 - Jul 24$10.96, Jul 8 - Jul 25$10.29, Jul 17 - Jul 25$15.64, Jul 25 - Jul 31$11.64, Jul 26 - Jul 29$10.27, Jul 26 5:04 am$15.64, Jul 25 - Jul 31$11.64, Jul 26 - Jul 29$9.99, Jul 28 6:56 pm$15.64, Jul 25 - Jul 31$14.19, Jul 30 - Jul 31$9.96, Jul 30 2:13 pm$14.85, Aug 1 - Aug 6$10.85, Aug 1 - Aug 4$9.92, Aug 2 - Aug 3$14.85, Aug 1 - Aug 6$14.18, Aug 5 3:56 am$9.89, Aug 5 3:56 am$15.80, Aug 7 - Aug 12$14.53, Aug 7 - Aug 8$9.84, Aug 7 8:25 am$15.80, Aug 7 - Aug 12$14.95, Aug 9 - Aug 10$9.78, Aug 9 7:11 am$15.80, Aug 7 - Aug 12$14.96, Aug 11 - Aug 14$9.72, Aug 12 7:23 am$18.95, Aug 13 - Aug 17$14.96, Aug 11 - Aug 14$9.70, Aug 14 - Aug 17$18.95, Aug 13 - Aug 17$12.87, Aug 16 9:39 am$9.70, Aug 14 - Aug 17$18.76, Aug 18 - Aug 19$11.38, Aug 18 - Aug 24$9.50, Aug 19 - Aug 20$15.64, Aug 21 - Oct 10$11.38, Aug 18 - Aug 24$9.00, Aug 21 - Aug 23$15.64, Aug 21 - Oct 10$11.41, Aug 25 - Aug 28$9.49, Aug 25 - Aug 28$15.64, Aug 21 - Oct 10$11.64, Aug 29 6:09 am$8.99, Aug 29 6:09 am$15.64, Aug 21 - Oct 10$11.41, Aug 30 - Sep 5$8.90, Aug 31 - Sep 8$15.64, Aug 21 - Oct 10$11.40, Sep 6 - Sep 10$8.90, Aug 31 - Sep 8$15.64, Aug 21 - Oct 10$11.40, Sep 6 - Sep 10$8.89, Sep 10 - Sep 11$15.64, Aug 21 - Oct 10$11.64, Sep 11 - Sep 12$8.90, Sep 12 - Sep 15$15.64, Aug 21 - Oct 10$11.41, Sep 13 - Sep 22$8.90, Sep 12 - Sep 15$15.64, Aug 21 - Oct 10$11.41, Sep 13 - Sep 22$8.84, Sep 17 8:13 pm$15.64, Aug 21 - Oct 10$11.41, Sep 13 - Sep 22$8.74, Sep 20 3:41 am$15.64, Aug 21 - Oct 10$11.41, Sep 13 - Sep 22$8.75, Sep 21 - Sep 29$15.64, Aug 21 - Oct 10$11.40, Sep 24 - Oct 3$8.75, Sep 21 - Sep 29$15.64, Aug 21 - Oct 10$11.40, Sep 24 - Oct 3$10.76, Oct 2 - Oct 11$15.64, Aug 21 - Oct 10$11.39, Oct 4 - Oct 9$10.76, Oct 2 - Oct 11$13.15, Oct 11 - Oct 12$10.77, Oct 11 10:33 am$10.76, Oct 2 - Oct 11$15.64, Oct 13 - Oct 20$11.38, Oct 14 9:38 pm$10.82, Oct 14 - Oct 17$15.64, Oct 13 - Oct 20$11.36, Oct 16 - Oct 21$10.82, Oct 14 - Oct 17$15.64, Oct 13 - Oct 20$11.36, Oct 18 - Oct 19$11.36, Oct 16 - Oct 21$16.82, Oct 21 - Oct 26$11.39, Oct 20 - Oct 21$11.36, Oct 16 - Oct 21$16.82, Oct 21 - Oct 26$11.35, Oct 22 - Oct 28$11.28, Oct 24 2:32 am$16.82, Oct 21 - Oct 26$11.35, Oct 22 - Oct 28$11.22, Oct 26 4:08 am$14.85, Oct 28 - Nov 3$11.35, Oct 22 - Oct 28$10.64, Oct 28 10:20 pm$14.85, Oct 28 - Nov 3$10.85, Oct 31 - Nov 3$10.24, Oct 31 2:07 pm$14.85, Oct 28 - Nov 3$10.85, Oct 31 - Nov 3$9.84, Nov 3 8:19 am$15.64, Nov 7 - Nov 10$11.38, Nov 7 - Nov 10$9.70, Nov 7 3:11 am$15.64, Nov 7 - Nov 10$11.38, Nov 7 - Nov 10$4.61, Nov 10 5:57 am$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$4.08, Nov 15 4:02 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$10.63, Nov 17 3:14 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$4.02, Nov 20 10:38 am$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$4.76, Nov 22 2:45 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$7.32, Nov 24 4:24 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$7.30, Nov 25 - Nov 28$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$8.91, Nov 29 6:40 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.45, Dec 2 7:23 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.41, Dec 4 - Dec 5$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.40, Dec 6 6:34 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.34, Dec 9 10:38 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.31, Dec 11 2:24 am$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.18, Dec 15 12:20 am$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.12, Dec 16 11:17 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.01, Dec 21 8:07 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$8.96, Jan 1 1:45 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.99, Jan 11 - Jan 21$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.94, Jan 22 12:42 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.98, Jan 23 - Jan 25$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$10.75, Jan 27 12:44 pm$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$10.76, Jan 29 - Feb 5$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$10.22, Feb 7 - Feb 17$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$10.76, Feb 18 - Feb 25$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$10.00, Feb 28 - Mar 1$14.96, Nov 15 - Apr 25$10.96, Nov 15 - Mar 3$9.95, Mar 2 5:49 pm$14.96, Nov 15 - Apr 25$11.24, Mar 4 - Mar 18$8.96, Mar 4 8:37 pm$14.96, Nov 15 - Apr 25$11.24, Mar 4 - Mar 18$7.91, Mar 8 12:39 am$14.96, Nov 15 - Apr 25$11.24, Mar 4 - Mar 18$7.95, Mar 9 1:40 am$14.96, Nov 15 - Apr 25$11.24, Mar 4 - Mar 18$8.94, Mar 11 8:31 am$14.96, Nov 15 - Apr 25$11.24, Mar 4 - Mar 18$8.83, Mar 13 2:52 pm$14.96, Nov 15 - Apr 25$11.24, Mar 4 - Mar 18$8.73, Mar 16 4:41 pm$14.96, Nov 15 - Apr 25$11.23, Mar 20 - Mar 22$8.68, Mar 20 - Mar 21$14.96, Nov 15 - Apr 25$11.23, Mar 20 - Mar 22$8.66, Mar 22 - Mar 24$14.96, Nov 15 - Apr 25$11.24, Mar 23 - Mar 31$8.66, Mar 22 - Mar 24$14.96, Nov 15 - Apr 25$11.24, Mar 23 - Mar 31$8.24, Mar 25 - Mar 27$14.96, Nov 15 - Apr 25$11.24, Mar 23 - Mar 31$8.23, Mar 29 7:40 am$14.96, Nov 15 - Apr 25$11.24, Mar 23 - Mar 31$8.25, Mar 30 - Mar 31$14.96, Nov 15 - Apr 25$11.42, Apr 2 - Apr 4$8.01, Apr 2 12:32 am$14.96, Nov 15 - Apr 25$11.42, Apr 2 - Apr 4$7.10, Apr 4 2:59 pm$14.96, Nov 15 - Apr 25$11.14, Apr 7 - Apr 25$8.95, Apr 8 - Apr 11$14.96, Nov 15 - Apr 25$11.14, Apr 7 - Apr 25$8.99, Apr 12 - Apr 18$14.96, Nov 15 - Apr 25$11.14, Apr 7 - Apr 25$7.00, Apr 19 - Apr 21$14.96, Nov 15 - Apr 25$11.14, Apr 7 - Apr 25$6.97, Apr 22 12:15 pm$14.96, Apr 27 - May 24$11.14, Apr 27 - May 4$6.94, Apr 27 - Apr 28$14.96, Apr 27 - May 24$11.14, Apr 27 - May 4$6.91, Apr 30 12:23 am$14.96, Apr 27 - May 24$11.14, Apr 27 - May 4$6.82, May 2 - May 4$14.96, Apr 27 - May 24$11.37, May 5 - May 24$5.94, May 5 1:30 pm$14.96, Apr 27 - May 24$11.37, May 5 - May 24$5.91, May 7 1:09 am$14.96, Apr 27 - May 24$11.37, May 5 - May 24$5.94, May 9 - May 12$14.96, Apr 27 - May 24$11.37, May 5 - May 24$7.00, May 14 - May 18$14.96, Apr 27 - May 24$11.37, May 5 - May 24$4.96, May 20 - May 22$14.96, Apr 27 - May 24$11.37, May 5 - May 24$7.00, May 24 12:56 pm$15.90, May 28 - May 31$11.41, May 28 - May 31$5.98, May 28 11:12 pm$15.90, May 28 - May 31$11.41, May 28 - May 31$6.99, May 31 6:55 am$14.96, Jun 4 - Jun 26$14.17, Jun 4 - Jun 13$10.96, Jun 4 - Jun 28$14.96, Jun 4 - Jun 26$10.96, Jun 4 - Jun 28$10.62, Jun 17 3:39 am$14.96, Jun 4 - Jun 26$10.96, Jun 4 - Jun 28$10.63, Jun 19 1:48 am$14.96, Jun 4 - Jun 26$10.96, Jun 4 - Jun 28$10.62, Jun 22 7:32 pm$14.96, Jun 4 - Jun 26$10.96, Jun 4 - Jun 28$10.63, Jun 24 5:31 pm$14.96, Jun 4 - Jun 26$10.96, Jun 4 - Jun 28$10.62, Jun 26 4:11 pm$14.25, Jun 28 - Jul 2$12.40, Jun 30 7:57 pm$10.25, Jun 28 - Jun 30$14.25, Jun 28 - Jul 2$12.40, Jun 30 7:57 pm$10.18, Jul 2 10:40 pm$15.90, Jul 5 3:14 am$12.40, Jun 30 7:57 pm$11.59, Jul 5 3:14 am$19.24, Jul 10 - Jul 21$15.13, Jul 10 6:17 pm$12.40, Jun 30 7:57 pm$19.24, Jul 10 - Jul 21$15.23, Jul 14 - Jul 19$12.40, Jun 30 7:57 pm$19.24, Jul 10 - Jul 21$14.22, Jul 21 11:52 am$12.40, Jun 30 7:57 pmOOS $19.24, Jul 23 - Jul 28$13.26, Jul 24 10:19 pm$12.40, Jun 30 7:57 pmOOS $19.24, Jul 23 - Jul 28$12.85, Jul 26 6:11 pm$12.40, Jun 30 7:57 pmOOS $19.24, Jul 23 - Jul 28$12.72, Jul 28 1:34 pm$12.40, Jun 30 7:57 pm$19.24, Jul 30 - Jul 31$11.33, Jul 31 10:45 pm$11.22, Jul 31 10:45 pm$12.94, Aug 2 - Aug 12$10.75, Aug 2 - Aug 12$8.54, Aug 2 6:43 pm$12.94, Aug 2 - Aug 12$10.75, Aug 2 - Aug 12$7.21, Aug 6 11:30 am$12.94, Aug 2 - Aug 12$10.75, Aug 2 - Aug 12$6.79, Aug 8 9:06 am$12.94, Aug 2 - Aug 12$10.75, Aug 2 - Aug 12$7.56, Aug 10 - Aug 14$12.94, Aug 16 - Aug 26$10.75, Aug 16 - Aug 26$7.46, Aug 16 5:48 am$12.94, Aug 16 - Aug 26$10.75, Aug 16 - Aug 26$7.37, Aug 18 5:41 am$12.94, Aug 16 - Aug 26$10.75, Aug 16 - Aug 26$7.35, Aug 20 - Aug 22$12.94, Aug 16 - Aug 26$10.75, Aug 16 - Aug 26$7.33, Aug 24 - Aug 30OOS $12.94, Aug 28 5:52 am$11.48, Aug 28 5:52 am$7.33, Aug 24 - Aug 30$15.43, Aug 30 - Sep 18$11.43, Aug 30 - Sep 18$7.33, Aug 24 - Aug 30$15.43, Aug 30 - Sep 18$11.43, Aug 30 - Sep 18$7.99, Aug 31 9:53 pm$15.43, Aug 30 - Sep 18$11.43, Aug 30 - Sep 18$8.30, Sep 4 - Sep 6$15.43, Aug 30 - Sep 18$11.43, Sep 8 6:12 pm$11.43, Aug 30 - Sep 18$15.43, Aug 30 - Sep 18$11.43, Aug 30 - Sep 18$11.41, Sep 10 6:06 pm$15.43, Aug 30 - Sep 18$11.43, Aug 30 - Sep 18$11.40, Sep 12 5:25 pm$15.43, Aug 30 - Sep 18$11.43, Aug 30 - Sep 18$11.27, Sep 16 3:46 pm$15.43, Aug 30 - Sep 18$11.43, Aug 30 - Sep 18$11.08, Sep 18 2:53 pm$15.90, Sep 20 - Nov 20$11.48, Sep 20 - Sep 22$11.06, Sep 20 2:04 pm$15.90, Sep 20 - Nov 20$11.48, Sep 20 - Sep 22$11.05, Sep 22 2:02 pm$15.90, Sep 20 - Nov 20$11.89, Sep 26 2:04 pm$11.78, Sep 26 2:04 pm$15.90, Sep 20 - Nov 20$11.59, Sep 28 1:42 pm$8.76, Sep 28 1:42 pm$15.90, Sep 20 - Nov 20$11.16, Oct 2 2:56 pm$10.00, Oct 2 2:56 pm$15.90, Sep 20 - Nov 20$10.77, Oct 4 4:33 pm$9.99, Oct 4 4:33 pm$15.90, Sep 20 - Nov 20$10.41, Oct 8 9:20 pm$10.00, Oct 6 - Oct 15$15.90, Sep 20 - Nov 20$10.42, Oct 10 11:56 pm$10.00, Oct 6 - Oct 15$15.90, Sep 20 - Nov 20$11.27, Oct 13 12:45 am$10.00, Oct 6 - Oct 15$15.90, Sep 20 - Nov 20$11.90, Oct 15 1:00 am$10.00, Oct 6 - Oct 15$15.90, Sep 20 - Nov 20$11.27, Oct 17 - Oct 18$10.42, Oct 17 - Oct 18$15.90, Sep 20 - Nov 20$11.48, Oct 20 11:29 pm$10.00, Oct 20 11:29 pm$15.90, Sep 20 - Nov 20$11.17, Oct 22 10:56 pm$6.44, Oct 22 10:56 pm$15.90, Sep 20 - Nov 20$10.71, Oct 24 9:52 pm$9.99, Oct 24 9:52 pm$15.90, Sep 20 - Nov 20$10.42, Oct 26 9:23 pm$8.45, Oct 26 - Nov 6$15.90, Sep 20 - Nov 20$11.48, Oct 28 - Nov 3$8.45, Oct 26 - Nov 6$15.90, Sep 20 - Nov 20$11.86, Nov 6 1:38 am$8.45, Oct 26 - Nov 6$15.90, Sep 20 - Nov 20$11.57, Nov 10 4:12 am$10.00, Nov 10 4:12 am$15.90, Sep 20 - Nov 20$10.97, Nov 14 8:37 am$9.90, Nov 14 8:37 am$15.90, Sep 20 - Nov 20$10.68, Nov 16 12:27 pm$9.62, Nov 16 12:27 pm$15.90, Sep 20 - Nov 20$11.22, Nov 18 - Dec 2$9.99, Nov 18 5:30 pm$15.90, Sep 20 - Nov 20$11.22, Nov 18 - Dec 2$9.98, Nov 20 11:00 pm$16.95, Nov 23 - Dec 17$11.22, Nov 18 - Dec 2$9.99, Nov 23 - Dec 7$16.95, Nov 23 - Dec 17$11.27, Dec 7 - Dec 17$9.99, Nov 23 - Dec 7$16.95, Nov 23 - Dec 17$11.27, Dec 7 - Dec 17$9.86, Dec 10 3:22 am$16.95, Nov 23 - Dec 17$11.27, Dec 7 - Dec 17$9.94, Dec 12 5:15 pm$16.95, Nov 23 - Dec 17$11.27, Dec 7 - Dec 17$8.76, Dec 15 6:40 am$16.95, Nov 23 - Dec 17$11.27, Dec 7 - Dec 17$7.03, Dec 17 8:00 pm$18.58, Dec 22 6:07 pm$14.57, Dec 22 6:07 pm$9.62, Dec 22 6:07 pm$18.61, Dec 25 4:24 am$14.57, Dec 22 6:07 pm$8.16, Dec 25 4:24 am$19.95, Dec 30 - Jan 1$14.57, Dec 22 6:07 pm$9.97, Dec 30 - Jan 1$18.81, Jan 6 10:23 am$12.21, Jan 6 10:23 am$10.00, Jan 6 - Jan 11$18.58, Jan 8 - Mar 9$12.17, Jan 8 - Jan 13$10.00, Jan 6 - Jan 11$18.58, Jan 8 - Mar 9$12.17, Jan 8 - Jan 13$9.98, Jan 13 9:56 pm$18.58, Jan 8 - Mar 9$12.12, Jan 18 10:46 pm$9.93, Jan 18 10:46 pm$18.58, Jan 8 - Mar 9$11.27, Jan 24 - Jan 29$10.00, Jan 24 12:04 am$18.58, Jan 8 - Mar 9$11.27, Jan 24 - Jan 29$9.98, Jan 26 1:32 pm$18.58, Jan 8 - Mar 9$11.27, Jan 24 - Jan 29$9.93, Jan 29 3:25 am$18.58, Jan 8 - Mar 9$10.99, Jan 31 3:53 pm$9.89, Jan 31 3:53 pm$18.58, Jan 8 - Mar 9$11.27, Feb 3 4:56 am$9.87, Feb 3 4:56 am$18.58, Jan 8 - Mar 9$12.19, Feb 8 6:17 am$9.74, Feb 8 6:17 am$18.58, Jan 8 - Mar 9$12.15, Feb 13 12:04 pm$9.69, Feb 13 12:04 pm$18.58, Jan 8 - Mar 9$12.09, Feb 18 8:54 pm$9.74, Feb 18 8:54 pm$18.58, Jan 8 - Mar 9$11.94, Feb 24 9:26 am$8.21, Feb 24 9:26 am$18.58, Jan 8 - Mar 9$11.84, Feb 27 3:09 am$9.00, Feb 27 3:09 am$18.58, Jan 8 - Mar 9$11.66, Mar 9 3:59 pm$7.72, Mar 9 3:59 pm$18.95, Mar 15 6:57 pm$12.11, Mar 15 6:57 pm$10.24, Mar 15 6:57 pm$19.24, Mar 21 6:48 pm$12.13, Mar 21 6:48 pm$9.99, Mar 21 6:48 pm$18.88, Mar 27 3:07 pm$12.06, Mar 27 3:07 pm$9.74, Mar 27 - Apr 2$18.58, Apr 2 - Apr 20$11.54, Apr 2 11:55 am$9.74, Mar 27 - Apr 2$18.58, Apr 2 - Apr 20$11.68, Apr 8 6:52 am$9.65, Apr 8 6:52 am$18.58, Apr 2 - Apr 20$11.28, Apr 14 3:58 am$10.37, Apr 14 3:58 am$18.58, Apr 2 - Apr 20$13.85, Apr 20 3:46 am$10.22, Apr 20 3:46 am 27,106426,402 468,750 312,500 156,250 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr Jun 2015 2016

Price Details

New

Latest $18.58 2 days ago
Highest $19.95 Dec 30, '15
Lowest $12.94 Aug 28, '15
Average $18.77 (30d avg)
$18.67 (90d avg)
$17.95 (180d avg)
$16.68 (365d avg)
$16.02 (Lifetime average)
Added Oct 5, 2013

3rd Party New

Latest $13.85 2 days ago
Highest $16.04 Apr 18, '14
Lowest $10.41 Oct 8, '15
Average $11.74 (30d avg)
$11.76 (90d avg)
$11.87 (180d avg)
$11.61 (365d avg)
$11.55 (Lifetime average)
Added Oct 5, 2013

3rd Party Used

Latest $10.22 2 days ago
Highest $15.23 Jul 14, '15
Lowest $4.02 Nov 20, '14
Average $9.90 (30d avg)
$9.57 (90d avg)
$9.49 (180d avg)
$9.58 (365d avg)
$9.53 (Lifetime average)
Added Oct 5, 2013

Sales Rank

30 day average: 73,763
90 day average: 161,135

Product Description

How to upgrade, operate and troubleshoot 12-volt systems with emphasis on understanding what may be wrong with a system and how to improve it with a multi-stage charging system. Excellent diagrams, clear, concise writing.

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