DC Battery Backup Lecture

Some general guidance that I have learned over the years on using batteries for backup and off grid use.

0:00 - intro
3:35 - components, ins and outs
20:34 - battery capacity and rules
31:10 - battery charging stages
38:45 - Peukert's Law and battery draw
45:00 - Walmart group 29 example, Excel formula
52:50 - AC inverter loss example and measurement
1:00:54 - Accessories

Here are links to some of my recommended products.

Solar panels are on Amazon and have varied in value over the years. $1.50-$3.00 per watt

Sunforce 7 Amp Charge Controller $17.00
Link: http://amzn.com/B0006JO0XI

Batteries vary by size and type. I have bought mostly walmart entry level marine. Serious users buy Trojan 6V and series them together to increase voltage. I buy walmart 4 gauge cables ($5 each) to tie batteries together.

PowerMax PM3-55 55 Amp 12V Power Supply $120.99
Link: http://amzn.com/B004W8MQA8

Generators vary by size and type. Harbor freight low end @ $89-$99 on sale. Mine has started and run fine for years.

Kimdrox DC Voltage Converter Regulator 12V/24V 10-32V to 36-60V 48V Boost Charger Module $3.39
Link: http://amzn.com/B008NKNHSG

Sunforce 11240 1000 Watt Pure Sine Wave Inverter with Remote Control $185.21
Link: http://amzn.com/B000WGNNUQ

Mulitmeters vary by size and type.

P3 P4400 Kill a Watt Electricity Usage Monitor $25.00
Link: http://amzn.com/B00009MDBU

MASTECH MS2108A 400 AC DC Current Clamp Meter $43.00
Link: http://amzn.com/B009CNYJG2

Johnson Controls A19AAT-2C Freezer Temperature Controller $48.00
Link: http://amzn.com/B0002EAL58

Class 2.5 DC 0-5A Ammeter Fine Tuning Dial Panel Meter $7.45
Link: http://amzn.com/B00A15EA1E

Absolute USA 16 Gauge 500-Feet Spool Primary Power Wire Cable $21.58
Link: http://amzn.com/B00HJOJSF8

sunkee AD584LH 4-Channel 2.5v/7.5v/5v/10v High Precision Voltage Reference Module $29.80
Link: http://amzn.com/B00F2I3GHY

Hopkins 47965 2-Pole Flat Extension $2.99
Link: http://amzn.com/B0002Q80RW

"Watt's Up" RC Watt Meter & Power Analyzer WU100 Version 2 --- SALE! $52.37
Link: http://amzn.com/B001B6N2WK
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