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Obvious Problems: 1: You're not using a pure sine wave inverter so right off the back you are losing significant efficiency (Most the things you're charging us
by cjonas 9y ago
Obvious Problems:
1: You're not using a pure sine wave inverter so right off the back you are losing significant efficiency (Most the things you're charging use DC power anyways so it would be better to just get a nice DC charger).
2: If you are discharging your battery past 50%, you're going to significant reduce it's life span.
- k__ 9y agoI asked this myself too. Aren't most electric devices used today DC?
- cjonas 9y agoEverything that runs off a battery is DC. However, for the past 4 months, I've been charging all my devices off solar/battery (working-travel vacation in a van). I have run into some issues with certain devices not accepting charge. I think it has more to do with the device charges themselves than the power source. For example, my girlfriends Motorola Droid Turbo won't charge at all anymore off the 2.1 amp usb chargers. My S7 has no problems. Her cheap windows laptop will also sometimes refuse charge temporarily. Battery voltage is reliably between 12.3-13.0, which makes me think it's an issue with the chargers themselves.
- 100ideas 9y agoDitto re: battery capacity. Using all 35 Amp-Hours repeatedly will destroy the battery. Anode terminals dissolve during discharging. They are electrolytically plated (thickened) during charging. So repeated full-discharging can reduce their solid volume to such an extent that they cannot be fully restored during charging. In general, "deep-cycle" lead-acid batteries shouldn't be discharged to less than 50% of their rated capacity to ensure a healthy, long life in an off-grid solar setup like this one. So more like 17 yrs to repayment - as long as he hasn't already bricked his battery.