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Low-cost Waterproof DC/DC Converter For EV / Truck / Forklift / Golf cart

An electric car still uses a 12 volt system to power all of the original 12 volt accessories: lights, horn, etc. This may also power some control circuits for the electric drive system. However, unlike a gas car, there is no alternator to keep this battery charged. One option in the early days of EVs was to use a deep cycle 12 volt battery, as heavy duty as possible, and recharge it when you charge the main battery pack. This is not adequate if any amount of night driving is intended. As the battery drains in use, the headlights will grow dimmer and the turn signals flash more slowly. It can also effect the running of the car if some of the drive system components do not get the 12 volt signal they require.

It would seem to be simple to tap 12 volt from one or two of the main pack batteries. This is not recommended, because it will cause the pack to discharge unevenly, affecting performance and battery life. It also violates the isolation of the traction pack from the chassis, which is required by some components, and necessary for safety.

The solution is a DC/DC convertor. This taps the full battery pack voltage and cuts it down to a regulated output, similar to that from an alternator. By tapping the full pack, there is no uneven discharge. Amperage required is so low that there is little effect on range. Isolation of the high and low voltage systems is maintained inside the DC/DC converter. This also eliminates the need for a separate 12 volt charging circuit for an auxiliary battery.

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	Step down, non-isolated dc-dc converter Features: all-epoxy sealed containers, Waterproof; Light compact, convenient to use and transport; efficiency:> 90%; temperature at -10 ℃ - 45 ℃; with overload / over-current / over / low voltage protection (some of the products have the protection of plus or minus reverse), stable performance. Power V-in V-out I-out Weight(g) Size (L×W×H) mm 15W 24V 5.7V 2.2A 125g 60×65×23 30W 12V 5V 6A 200g 60×65×23 60W 24V 12V 5A 125g 60×65×23 120W 24V 12V 10A 250g 74×73×27 180W 36V 12V 15A 300g 74×73×27 180W 24V 12V 15A 250g 74×73×27 140W 24V 13.8V 10A 210g 77×70×27
	Step up, non-isolated dc-dc converter Features: all-epoxy sealed containers, Waterproof; Light compact, convenient to use and transport; efficiency:> 90%; temperature at -10 ℃ - 45 ℃; with overload / over-current / over / low voltage protection (some of the products have the protection of plus or minus reverse), stable performance. Power V-in V-out I-out Weight(g) Size (L×W×H) mm 40W 12V 24V 1.7A 210g 70×77×28 48W 12V 24V 1.97A 125g 60×65×23 60W 12V 24V 2.5A 125g 60×65×23 120W 12V 24V 5A 210g 70×77×28 200W 12V 24V 8A 210g 70×77×28 240W 12V 24V 10A 210g 70×77×28 360W 12V 24V 15A 250g 74×71×27 60W 12V 33V 1.8A 250g 74×71×27 65W 12V 36V 1.8A 125g 60×65×23 220W 12V 48V 4.5A 210g 70×77×28