How accurate is the range estimate?

It is an estimate built from typical consumption for Indian 2-wheelers and e-rickshaws. Payload, gradients, traffic, tyre pressure and riding style can change real-world range by 20% or more either way, which is why the calculator sizes with a 10% reserve on top of the distance you enter.

Can I use a battery of a different voltage in my vehicle?

No. The pack must match the voltage your motor and controller are built for. A higher-voltage pack can damage the controller and a lower-voltage pack will not run the vehicle properly, so the calculator only ever suggests packs at your vehicle’s voltage.

Why does the age of my vehicle change the battery size?

Worn bearings and tyres, brake drag and an ageing controller all increase the energy a vehicle uses per kilometre. The calculator adds 2% for each year of age, up to a maximum of 20%, so an older vehicle is not sized as if it were new.

Which charger should I use with my pack?

A lithium pack must be charged to its exact charge voltage. Next to each recommended pack we show only the chargers whose output matches that pack, and none for packs where we cannot confirm a match.

Free sizing tool for electric vehicles

Find the right battery for your scooter or e-rickshaw

Tell us the motor power, voltage, how far you need to go on one charge and how old the vehicle is. We estimate the LiFePO4 capacity it needs, show the working, and point you at Trontek packs — with a matching charger — at your vehicle’s exact voltage. Nothing here needs an email address.

How this is calculated

Energy per km. We start from typical consumption — about 30 Wh/km for a 2-wheeler with a 1000 W motor, and about 70 Wh/km for an e-rickshaw with a 1200 W motor — and scale it by the square root of your motor power, within 20–40 Wh/km for 2-wheelers and 55–90 Wh/km for e-rickshaws.

Vehicle age. Add 2% for each year, up to 20%.

Battery energy = distance × energy per km × age allowance ÷ 90% usable depth of discharge, plus a 10% reserve.

Capacity (Ah) = battery energy ÷ the pack’s nominal voltage (for example 51.2 V for a 48 V vehicle, 60.8 V for 60 V, 73.6 V for 72 V). It is never smaller than the size needed to keep the motor’s current at or below 1C for a 2-wheeler or 0.5C for an e-rickshaw.

Range for a pack = its capacity × voltage × 90% ÷ energy per km.

Questions

How accurate is the range estimate?: It is an estimate built from typical consumption for Indian 2-wheelers and e-rickshaws. Payload, gradients, traffic, tyre pressure and riding style can change real-world range by 20% or more either way, which is why the calculator sizes with a 10% reserve on top of the distance you enter.
Can I use a battery of a different voltage in my vehicle?: No. The pack must match the voltage your motor and controller are built for. A higher-voltage pack can damage the controller and a lower-voltage pack will not run the vehicle properly, so the calculator only ever suggests packs at your vehicle’s voltage.
Why does the age of my vehicle change the battery size?: Worn bearings and tyres, brake drag and an ageing controller all increase the energy a vehicle uses per kilometre. The calculator adds 2% for each year of age, up to a maximum of 20%, so an older vehicle is not sized as if it were new.
Which charger should I use with my pack?: A lithium pack must be charged to its exact charge voltage. Next to each recommended pack we show only the chargers whose output matches that pack, and none for packs where we cannot confirm a match.

Talk to a real engineer

Warranty, service and honest advice

If you are unsure whether a system fits your load, ask before you buy. We would rather talk you into the right size than sell you the wrong one.

Asked most often

How do I choose the right battery for my vehicle?: Match the voltage first: the pack must have the same system voltage as your vehicle’s controller — 48 V, 60 V or 72 V for most scooters, 51 V, 61 V or 64 V for e-rickshaws. Then choose capacity (Ah) for the range you need: more ampere-hours means more kilometres per charge. The mobility calculator works this out from your motor rating and daily distance.
What payment methods can I use?: UPI, credit and debit cards, net banking and wallets, through Razorpay. Paying by UPI takes ₹200 off the order. Card EMI is available at the payment step on your card issuer’s terms. Payment is taken online when you place the order.
How much does delivery cost?: Standard delivery is free on orders above ₹4,999. Below that a flat delivery charge applies and is shown in the cart before you pay. Batteries ship in protective crates at no extra charge.
How long is the warranty?: It is stated on every product page, in the manufacturer’s own words — for example 3 years or 1200 cycles on the LiEV e-rickshaw packs, and 5 years or 4000 cycles on the Powercube home batteries, whichever comes first.

Read all frequently asked questions