Truck Battery Capacity, Ah and Price in India

A truck that will not start earns nothing, and a weak battery usually announces itself on a cold morning at a loading point far from any dealer. Buying the right replacement is simple once you know three numbers: the voltage of the system, the Ah rating, and what that capacity costs.

This guide explains truck battery capacity in plain terms, which Ah ratings Indian trucks use by segment, how 12 V and 24 V systems differ, and current truck battery prices from the manufacturers' own price lists.

Truck battery capacity: what Ah and voltage mean

Truck battery capacity is described by two numbers that do different jobs.

Voltage is the size of the electrical system. Small and medium trucks run 12 volts. Most heavy trucks run 24 volts, because a large diesel engine needs a big starter motor and 24 V delivers that power with less current through the cables.

Ah, or amp hours, is how much charge the battery stores. Battery makers in India quote it at the 20 hour rate, written as C20 on Exide's spec sheets. A 100 Ah battery can, in theory, deliver 5 amps for 20 hours. More Ah means more reserve for cranking a cold engine, running lights and electronics with the engine off, and surviving a weak alternator for longer.

Neither number tells you everything. A battery also has a cranking rating, which measures how much current it delivers in a short burst. Two batteries with the same Ah can crank differently, which is one more reason to buy the type your truck manufacturer specifies.

Truck battery Ah by segment

Manufacturers' own specification pages give the clearest picture.

• Medium trucks: Tata lists a 12 V, 100 Ah battery on the Tata Ultra T.16, and Eicher lists the same 12 V, 100 Ah on its Pro 3015 specification page. The Eicher Pro 3015 has a GVW of 16,371 kg, so a single 100 Ah battery is normal well into the heavier medium segment.
• Heavy trucks: Eicher lists a 24 V electrical system on the Pro 6048XP, a 47,500 kg GVW haulage truck. Heavy trucks commonly carry two large 12 V batteries to make that 24 V.
• Mini trucks and pickups: a single 12 V battery, smaller than a medium truck's. The exact Ah is in the owner's manual or on the battery fitted at the factory.

Battery makers build their truck ranges around these needs. Exide's Xpress range, which it markets as a truck battery, runs from 80 Ah to 200 Ah. Its Drive range, sold for everyday and commercial use, runs from 35 Ah up to 180 Ah.

12 V and 24 V systems: why heavy trucks use two batteries

Two 12 V batteries wired in series, positive of one to negative of the other, give 24 V. The Ah rating does not double. Two 150 Ah batteries in series make a 24 V, 150 Ah system.

That trips people up at the counter. If a heavy truck's manual specifies 24 V at 150 Ah, the truck needs two 150 Ah batteries, not two 75 Ah ones.

The pair also works as a team. When one battery in a series pair is weaker, the stronger one is overcharged and the weaker one is drained harder on every start. Replace both batteries together, with the same make, model and Ah, even if only one has failed. A new battery paired with a three year old one rarely lasts its warranty.

Truck battery price in India

Prices below are the MRPs Exide publishes on its own Xpress range page, inclusive of taxes, as listed in October 2026. Battery prices track the price of lead, so treat them as a dated snapshot.

Exide's Xpress truck range lists MRPs of Rs 10,140 for 88 Ah, Rs 11,515 for 100 Ah, Rs 14,408 for 130 Ah, Rs 18,442 for 150 Ah, Rs 21,789 for 180 Ah and Rs 29,196 for 200 Ah. Per amp hour that works out to about Rs 115 at 88 Ah and 100 Ah, Rs 111 at 130 Ah, Rs 123 at 150 Ah, Rs 121 at 180 Ah and Rs 146 at 200 Ah.

The cost per Ah stays flat until the very top of the range. Moving from 100 Ah to 150 Ah costs about the same per unit of storage, while the 200 Ah battery carries a clear premium.

Exide's Drive range page lists lower MRPs for the same capacities, with a shorter warranty:

• 88 Ah: Rs 8,618
• 100 Ah: Rs 9,369
• 130 Ah: Rs 12,728
• 150 Ah: Rs 15,207
• 180 Ah: Rs 19,721

What moves the price you actually pay: dealers often sell below MRP, handing in the old battery brings the price down further, and the warranty length is part of what you are buying.

Lorry battery price for a 24 V truck

For a 24 V heavy lorry the bill is two batteries. At the Xpress MRP, a pair of 150 Ah batteries comes to Rs 36,884 before any exchange discount. That is the figure to budget once every few years per heavy vehicle, and the reason fleet owners track battery dates per truck rather than per fleet.

Amaron, the other large Indian battery maker, sells three commercial vehicle ranges on its commercial vehicle battery page: HIWAY with a 42 month warranty, BLACK with 24 months and FRESH with 12 months. It does not print prices there, saying they vary by vehicle and Ah, and offers a battery finder by truck make and model.

Warranty: free replacement and pro-rata

A long warranty headline hides two parts.

• Free replacement period: a failed battery is replaced at no cost.
• Pro-rata period: you pay a share of a new battery, rising as the battery ages.

Exide describes the Xpress warranty as 42 months: 24 months free of cost plus 18 months pro-rata. The Drive range carries 36 months: 18 months free plus 18 months pro-rata. Exide also notes that warranty depends on OEM fitment and that terms differ for commercial applications, so read the warranty card before you assume the full period applies to a working truck.

Keep the invoice and the warranty card in the vehicle file. A claim without them is usually refused, however obvious the failure.

How long a truck battery lasts

A truck or lorry battery typically lasts two to three years in Indian conditions, as the truck maintenance cost and schedule guide notes. What decides where in that range yours falls is how it is treated.

• Heat. Engine bay and summer temperatures speed up the chemical ageing inside every lead acid battery.
• Vibration. A loose hold down clamp lets the battery shake on bad roads, which damages the plates.
• Deep discharge. Running the AC, lights or music with the engine off drains the battery further than it is built to go.
• Parked load. A vehicle tracking unit draws a small current around the clock; the AIS-140 guide explains why commercial vehicles carry one. Parked for two weeks, a truck can come back flat.
• Charging faults. A weak alternator or a slipping belt undercharges the battery every day.
• Dirty terminals. Corrosion adds resistance, so cranking gets slower long before the battery is actually worn.

Choosing the replacement

Match the manufacturer's specification first: voltage, Ah, terminal layout and physical size. Exide lists left and right terminal versions of many sizes, and the wrong one may not reach the cables.

A slightly higher Ah is usually fine if it fits the tray, and helps a truck with heavy electrical load. Going below the specified Ah is false economy, because the battery works harder on every start and dies sooner.

Signs a truck battery is failing

Watch for these before they leave a truck stranded:

1. Slow cranking, especially on the first start of the day
2. The battery warning light staying on after the engine starts
3. A swollen or cracked case, or a strong smell near the battery box
4. Repeated jump starts within a few weeks

If the battery fails on the road, the highway breakdown guide covers making the vehicle safe first.

Getting truck battery capacity right is a ten minute check of the manual and the label on the old battery. Get it wrong and you pay twice: once for a battery that does not suit the truck, and again for the day the truck does not start.