Short answer: identify the car by its chassis code, not by model year. The same nameplate can carry two or three completely different packs — the Alphard has been built with a 30-module 216 V pack, a 21-block 244.8 V pack and a 34-module 244.8 V pack, and only one of them fits a given car.
Why the model year is not enough
Manufacturers reuse names for decades. “Toyota Alphard” covers three generations with three different battery architectures. “Toyota Crown” covers a 288 V pack and a 230.4 V pack. If you order by name and year alone, you have roughly a one-in-three chance of getting it right.
The chassis code — NHW20, ZVW30, ANH20, AWS210 — identifies the platform exactly. That is the number to quote when you ask for a pack.
The packs that get confused most often
| Model | Generation / chassis | Pack |
|---|---|---|
| Alphard | 10 series (2002–2008) | 30 modules, 216 V |
| 20 series (2008–2015) | 21 blocks, 244.8 V — mixed 9.6 V + 14.4 V | |
| 30 series (2015–2023) | 34 modules, 244.8 V | |
| Crown | 2008–2012 | 40 modules, 288 V |
| AWS210 (2012–2018) | 32 modules, 230.4 V | |
| Harrier | 2006–2009 | 30 blocks, 288 V — prismatic |
| 2013–2019 | 34 modules, 244.8 V | |
| Prius | NHW10 (1997–2000) | 40 modules, 288 V |
| NHW11 (2000–2003) | 38 modules, 273.6 V | |
| NHW20 / ZVW30 / ZVW50 (2004–2022) | 28 modules, 201.6 V — the same pack across three generations | |
| Voxy / Noah / Esquire | 2008–2015 | 21 blocks, 244.8 V — mixed |
| 2014–2021 | 28 modules, 201.6 V |
Notice the pattern: the same voltage can be built two different ways, and the same car name can span both. The Prius from 2004 to 2022 uses one pack — the exception that makes people overconfident.
How to read the chassis code
- Look at the VIN plate — usually at the base of the windscreen or on the door pillar. Japanese-market cars often show the chassis number directly.
- Read the model code from the registration document or the sticker under the bonnet. Toyota codes follow the pattern: letters for the engine and platform, then the generation number.
- Check the battery bay if you can. The block layout is unmistakable: 28 identical 7.2 V modules look nothing like a mix of 9.6 V and 14.4 V blocks.
If you cannot find the code, send us a photo of the VIN plate and the battery bay. Two photos settle almost every fitment question.
The four pack families, and what they look like
| Family | Modules | Voltage | Typical cars |
|---|---|---|---|
| Entry | 14 / 20 / 22 | 100.8 / 144 / 158.4 V | Aqua, Prius C, Yaris, Vitz, Fielder, Axio, Sienta, Honda Insight, Civic |
| Mid | 28 | 201.6 V | Prius Gen2–Gen4, CT200h, Auris, C-HR, Noah, Voxy, Esquire |
| Upper | 30 / 32 / 34 / 38 | 216 / 230.4 / 244.8 / 273.6 V | Alphard 10/30, Estima, UX250h, Crown AWS210, IS300h, GS300h, Camry, ES300h, NX300h, RAV4, Previa, LM300h, Altima, CX-50 |
| Large | 30 / 40 | 288 V | RX400h, RX450h, Highlander, Harrier 2006–2009, Crown 2008–2012, GS450h, LS600h, Sienna, Tahoe, Silverado, Yukon, Sierra, Escalade, Aspen, Durango |
What to send us
Three things, and we can confirm the pack without you buying anything:
- The VIN or the chassis code.
- The model year on the registration.
- A photo of the current pack with the lid off, if it is already out.
We reply with the confirmed module count, voltage and chemistry options. Prices by pack size are here.
Frequently asked questions
My car is a 2013 Alphard. Which pack is that?
2013 falls in the 20 series, which uses the mixed 21-block 244.8 V pack — not the 34-module pack of the 30 series. Confirm the chassis code before ordering.
Are Prius Gen2, Gen3 and Gen4 packs really the same?
All three use 28 modules at 201.6 V, so one pack covers 2004–2022. This is the exception, not the rule — do not assume it holds for other models.
Can I upgrade a smaller pack to a bigger one?
No. The pack voltage has to match what the ECU expects. Fitting a different voltage is not an upgrade, it is a fault.
