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For questions about photovoltaic panels or photovoltaic-based solar power systems.

3 votes
1 answer
3k views

Does the specific gravity of a lead-acid battery indicate degradation?

Let say I have a battery that is a few years old. When it was new, the specific gravity was indicating 1.265 when full, and it lasted fairly long. If I do an equalization charge, for the same batter …
Asaf Chertkoff's user avatar
2 votes

Solar powered charger for laptop

A. You will need to calculate your Energy consumption estimations. Let say, for 5 hours a day of average laptop consumption (70W) you will need to produce 450-550w a day (that is 350w plus energy loss …
Asaf Chertkoff's user avatar
2 votes
1 answer
616 views

Fuse replacement in Xantrex solar charge controller

I have a Xantrex XW-MPPT60-150 solar charge controller. The moment came where I need to replace the fuse that protects the charger. The problem is that I need to replace it with Littlefuse KLKD 1 (600 …
Asaf Chertkoff's user avatar
3 votes
2 answers
1k views

What are some tips for deep cycle battery maintenance for an offgrid solar system?

I have an off grid solar system, with an 240AH 24v deep cycle battery, and the system (and all of the components in it) is a year and a half old. i have several questions and i hope that some one cou …
Asaf Chertkoff's user avatar