With good quality smart charger you will need to add 10-25% extra time to account for finish charging stage. Today's smart chargers can greatly differ in quality, which is why we only try to sell the best 48-volt smart chargers available. Keep in mind this estimate doesn’t take into account the smart charging factor of 48-volt smart chargers. Take this number and divide it by the amp rating of your 48 volt smart charger, which will give you an estimate to begin working with. These gauges help keep you from excessively discharging your batteries, thereby increasing the battery life.īy looking at the reading on the gauge, it will give you an estimate of what is left in your battery pack, so if your gauge says it is at 50%, and you have a 200 AH rated battery pack, then you know your batteries need to be charged up 100 Amps. Having a battery gauge is a crucial must-have device for determining when you need to charge your battery pack. This is something you are going to need to estimate based off a battery level gauge on your golf cart. Next, you need to determine the current state of the batteries you are charging. It is most likely printed on one of the batteries as an AH rating, and if you have several ratings, you want to select the 20-HR rating. This requires you to know the Amp/Hour rating of your battery pack. Time in Hours 10% to 25 % = Estimated time to complete chargeįirst, you need to know how many amps you need to put back into the battery pack.Amps Missing / Chargers Amp Rating = Time in Hours.Battery Capacity – Current State of Charge = Amps Missing.With all of these figures, you can get a pretty good estimate on how long it will take, but it will just be an estimate as smart chargers need extra time to finish charging the batteries. The time it takes to charge a 48 volt golf cart battery pack depends on the battery pack capacity, the current state of charge, and the charging current of the 48 volt smart charger. How long does it take to charge a 48v golf cart? On batteries that are still in good condition, this finish stage is quite fast, while batteries that are older may take extra time need to get to 100%. The Eagle Performance line made by Dual Pro / Pro Charging Systems are made in the USA chargers that utilize a patented Delta Volt technology that finish feeds the battery to a full 100%, and it will do this slowly without hurting the battery. Investing in a smart charger will save you money in battery replacement for your golf cart or boat, not to mention headaches with battery reliability. The other problem is how the cells will accept the charge according to the layout.Smart chargers provide more efficient battery maintenance for better performance and greater longevity of your 48v batteries. If we multiply this by 10 cells we get an ideal charge with 12 hours The 10A charger may force too much current and damage the cells. Here is what I gathered from my readings:ġ2V/7.2Ah safe charge requires 12 hours 600mA I don't know exactly how this automatic charger works but if we go by the formula posted earlier in this thread it looks like this scheme would charge a bit too fast. The ten cells would have their - posts connected to a common rail and the + posts connected to another common rail and these would terminate externally on the case as two insulated posts (one for each rail). After each use recharge them as soon as possible. More important with lead acid batteries: Do not leave them partially discharged for extended periods and do not discharge them fully. Provided you do not leave it at the charger for days. For instance the LTS-NP25 (PDF at ).īut for your bicycle a fixed voltage of 2.45V/cel will suffice. These will measure DC and are not that expensive, around $10. But the perfect solution is a compensated current transformer from LEM. Sensing current can be done with a resistor in the ground lead of the batteries. Besides this, the voltages are also slightly temperature dependent. When the charging current drops to 5% of the Ah value switch over to 2.35V to trickle charge. So the best and fastest way is to charge with 2.45V current limited to app. For standby use a trickle voltage of 2.35V/cell is recommended, for cyclic use 2.45V/cell is recommended. With lead acid batteries the trickle voltage depends of their use.
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