Module 7 of 10
Batteries and hybrid systems
LFP vs lead-acid, sizing for backup and time-of-day savings, hybrid inverters and safety.
- 5lessons
- 54minutes
- 1,593questions in the bank
Lessons
Battery basics: Ah, kWh, voltage, DoD, cycles, C-rate
Read a battery datasheet with confidence: convert Ah to kWh, understand depth of discharge, cycle life and C-rate, and compare cost per kWh delivered.
10 min readLFP vs lead-acid vs others for Indian homes
Compare tubular, VRLA, LFP, NMC and newer chemistries on usable energy, life, heat, safety and cost, and pick the right one for each customer.
10 min readSizing a battery for backup: essential loads and hours
Size a backup battery from essential loads and outage hours: list loads, find energy and peak power, then allow for DoD, efficiency and ageing.
11 min read, with a live calculatorBatteries for savings: time-of-day tariffs and self-consumption
When does a battery save money? Compare the tariff spread with the battery's wear cost under net metering, net billing, ToD tariffs and diesel backup.
11 min read, with a live calculatorHybrid system design and battery safety
Design a hybrid system: DC vs AC coupling, backup circuits, operating modes, battery cabling and fusing, and safe battery installation at home.
12 min read