How to Plan an EV Road Trip in Indonesia

A long drive in an electric vehicle (battery electric vehicle, or BEV) is not harder than a petrol road trip, but it does reward a little planning. The good news is that the planning is a method you learn once and reuse on every route, in any car. Instead of thinking about a single full tank, you think in short, frequent charging stops, and you let the charging curve and a route planner do most of the work. This guide walks through that reusable method for drivers in Indonesia: how full to charge at each stop, how to space stops along the route, how much battery to leave as a buffer, when to precondition the battery, and the tools and checks that keep a trip smooth.

By mht-dev, Frontend Engineer & Creator

A frontend engineer who bought a first electric car in March 2026 and built EV Charge Calculator while working out the real cost of charging it, writing every guide from an everyday new EV owner's perspective.

Charge 20 to 80% per stop, not to full

The single most useful habit on a road trip is to charge in short bursts rather than long full charges. At a DC fast charger, the fast part of the charge is the lower part of the battery: roughly 20 to 80% is where you add the most range per minute. Above 80% the speed tapers off steeply, so the last stretch to 100% adds little range for a lot of waiting. The practical result, which Plug In America and Recharged both describe, is that the last 10 to 20% of the battery can take about as long to fill as the first 60 to 70%. So on a trip you charge to roughly 80% and get moving again, rather than sitting at the charger crawling to full.

Two short stops are almost always faster overall than one long stop. Stopping near 80% twice, with a quick break each time, keeps you in the fast part of the curve at every charger and gets you back on the road sooner than a single stop dragged all the way to 100%. It is also gentler on the battery, since sitting at a very high state of charge adds stress. The only time you charge higher on a trip is when the next leg genuinely needs it, for example a long gap with no chargers, and even then you only add what you need. To understand exactly why the curve slows above 80%, see the guide on the EV charging curve.

Space stops around 80% of rated range, and keep a buffer

When you decide where to stop, do not trust the full rated range on the window sticker. A car's claimed range, whether on the EPA cycle used in some markets or the WLTP cycle used in others, is measured under gentle conditions, and a real highway leg at speed with the air conditioning on uses more. A safe rule of thumb is to plan each leg around 80% of the rated range, which leaves headroom for the motorway, the weather, and any detour. On a car rated for roughly 300 of its distance units, that points to stopping a little before you have driven about 200 of them, which is the kind of cadence Plug In America describes.

The other half of the rule is the buffer at the far end: never plan to arrive at a charger near 0%. Route planners and charging guides commonly suggest aiming to reach each charger with about 10 to 20% left in the battery. That margin is not waste, it is your protection against an unexpected closed or broken charger, a queue, a wrong turn, or simply using a bit more energy than the planner predicted. Plan the trip so the worst case still leaves you able to reach the next working charger, and you remove almost all of the stress from the drive.

Use a route planner and check each charger before you rely on it

You do not have to do the arithmetic yourself. A route planner such as A Better Route Planner, or the trip planner built into many modern EVs, takes your car, the route, the weather, and the chargers along the way, and turns them into a stop-by-stop plan with arrival percentages. These tools already apply the 20 to 80% logic and the arrival buffer, so the easiest reliable approach is to enter your destination, look at the suggested stops, and follow them. A useful habit on the road is to navigate to each charging stop in turn rather than to the final destination, because that lets the car prepare for the specific charger ahead.

Whatever the planner says, do a quick sanity check on each stop before you depend on it. Open the charging network's app or a map and confirm the station is live and not reported out of service, see whether anyone is waiting, and above all confirm the connector type matches your car. Plug standards are not interchangeable: CCS, NACS, and CHAdeMO are different physical plugs, and a station with the wrong one is no use to you no matter how fast it is. Having a backup charger in mind for each stop, in case the first is busy or down, is the small extra step that keeps a long drive relaxed.

Precondition the battery in cold weather, and pack the small things

In cold conditions, a battery charges much more slowly until it warms up, so an unprepared cold car can sit at a fast charger taking far longer than expected. The fix is preconditioning: warming the battery to its ideal charging temperature while you are still driving toward the charger. Most EVs do this automatically when you navigate to a charging stop, which is the main reason route to each charger in turn rather than to the final destination. Preconditioning usually begins roughly twenty to thirty minutes, or some tens of kilometres, before arrival. This matters far less in warm markets, where the battery is rarely too cold, but it is the difference between a quick and a frustrating charge in cold weather. For why temperature changes charging speed in the first place, see the guide on how temperature affects EV charging.

Beyond the charging plan, a road trip in any car rewards a little preparation, and the EV version is mostly the same as the petrol one. Carry your charging cards or have the relevant network apps installed and signed in before you set off, because fumbling with a new account at a remote charger is the most avoidable delay. Build the charging stops into the rhythm of the trip rather than fighting them: roughly every couple of hours your body wants a break for food, a drink, or a stretch, and that is almost exactly the cadence a 20 to 80% charging plan produces. Plan once, reuse the method everywhere, and a long EV drive becomes a series of short, predictable stops rather than a source of anxiety.

Frequently asked questions

How full should I charge at each stop on an EV road trip?

On a DC fast charger, charge to roughly 80% and move on, rather than waiting for 100%. The charging curve is fast in the lower part of the battery and slows steeply above 80%, so the last 10 to 20% can take about as long to add as the first 60 to 70%. Two short stops near 80% are almost always faster overall than one long stop dragged to full, and they are gentler on the battery too. Only charge higher when the next leg genuinely needs the extra range, for example a long gap with no chargers, and even then add only what you need. The exception is your home charge: it is fine to leave home with a high charge, since you do that overnight on AC where the slow top-up costs you no waiting time.

How far apart should I plan my charging stops?

Plan each leg around 80% of the car's rated range, not the full figure. The claimed range, whether on the EPA cycle or the WLTP cycle, is measured under gentle conditions, while real highway driving at speed with the climate control on uses more, so 80% of rated range is a safe planning distance. On a car rated for roughly 300 of its distance units, that means stopping a little before about 200 of them, which is the kind of spacing Plug In America suggests. Just as important, aim to reach each charger with about 10 to 20% still in the battery as a buffer, so a closed charger, a queue, or a detour does not leave you stranded. A route planner will work all of this out for you.

What is battery preconditioning and do I need it?

Preconditioning is warming the battery to its ideal charging temperature while you are still driving toward a fast charger, so it can accept full power the moment you plug in. A cold battery charges much more slowly, so without preconditioning a cold car can sit at a fast charger far longer than expected. Most EVs do this automatically when you navigate to a charging stop, which is why it helps to route to each charger in turn rather than straight to your destination. Preconditioning usually starts roughly twenty to thirty minutes, or some tens of kilometres, before you arrive. It matters most in cold weather and barely at all in consistently warm markets, where the battery is rarely too cold to charge quickly. For the underlying reason temperature changes charging speed, see the guide on how temperature affects EV charging.

Which route planner or app should I use to plan an EV road trip in Indonesia?

The most common choice is a dedicated route planner such as A Better Route Planner, which takes your specific car, the route, the weather, and the chargers and produces a stop-by-stop plan with arrival percentages. Many newer EVs also have a capable trip planner built into the car's own navigation, which has the advantage of triggering battery preconditioning automatically. Either is a fine starting point in Indonesia. Whichever you use, do a quick live check on each stop before relying on it: open the charging network's app or a map to confirm the station is working and not too busy, and above all confirm the connector type matches your car, since CCS, NACS, and CHAdeMO plugs are not interchangeable. Having a backup charger in mind for each stop keeps the trip relaxed if your first choice is occupied or out of service.

Will charging stops make an EV road trip much slower than driving a petrol car?

Less than people expect, because the method is built around stops you would take anyway. A 20 to 80% fast charge typically falls into a short break of the kind you naturally take every couple of hours for food, a drink, or a stretch, so much of the charging time overlaps with rest you would have taken in any car. The trip is longer than a non-stop petrol dash, but on most real journeys the difference is a modest amount of extra time rather than a transformation. The way to keep it small is to follow the method: charge to about 80% and move on, plan stops around 80% of rated range, keep an arrival buffer, precondition in the cold, and let a route planner sequence the stops. Done that way, a long EV drive is a series of short, predictable pauses rather than a source of stress.