BatteryStuff TechFor a situation like yours, I recommend using a battery isolator switch, which can be used on up to 120 amp alternators to conveniently allow for adding a spare battery in your car, boat, or RV. The unit is a fully automatic switch that allows the engine alternator to ch...
Cost Effective Solution for Dual Battery Applications. Go to eBay store Best Voltage Sensitive Relay in the Direct Online Market Selling through in-house website, ebay and amazon. 60 days money back. Business to trust and engage. One price international free shipping with tracking through Aftershi...
These things (small 5V supplies) can be found on Ebay or Amazon very cheaply, and comparatively make your offerings seem expensive. For instance I just bought a product similar to your model PST-AC0520W for $5.29, delivered to my home from a US supplier! But the reliability of these ...