Both use 288 V, but in two different builds: the RX400h uses 30 prismatic 9.6 V blocks and the RX450h uses the same 9.6 V architecture in a different layout.
Chassis codes covered
MHU38 (RX400h) · GYL10/GYL15 (RX450h)
Pack specification
| RX400h | 30 blocks · 288 V |
| RX450h | 30 blocks · 288 V |
| Capacity | 6.5 Ah |
| Format | Prismatic 9.6 V blocks |
What you need to know
The RX is a 288 V car with prismatic blocks — physically different from the 7.2 V cylindrical packs used across most of the Toyota range. If you have only worked on a Prius pack, this looks different inside.
The Highlander of the same era shares the RX400h pack.
Packs we build for this vehicle
| Pack | Chemistry | Configuration | Price |
|---|---|---|---|
| Lexus RX450H Hybrid Battery 2010-2015 | Li-ion | Lithium-ion | 288V | $1,863 |
| Toyota Highlander Hybrid Battery 2006-2009 | Ni-MH | Ni-MH | 288V · 30 pcs | $2,421 |
| Lexus RX450h Hybrid Battery 2010-2015 | Ni-MH 30×9.6V | Ni-MH | 288V · 30 pcs | $2,421 |
| Lexus RX400h Hybrid Battery 2006-2009 | Ni-MH | Ni-MH | 288V · 30 pcs | $2,421 |
| Lexus RX450h Hybrid Battery 2006-2009 | Ni-MH 15xS16 | Ni-MH | 288V · 15 sets | $2,510 |
| Lexus RX400h / Highlander Hybrid Battery 2006-2009 | Ni-MH | Ni-MH | 288V · 15 sets | $2,510 |
Before you order
Send the VIN or the chassis code and we confirm the pack against workshop data before it ships. If we confirm the fitment from your VIN and the pack does not fit, we take it back and cover the return freight. Prices by pack size · Fault-code diagnostics.
Frequently asked questions
Do RX400h and RX450h share a pack?
Both are 288 V with 9.6 V blocks, but confirm the chassis code — the layouts differ.
Does the Highlander use the RX pack?
The Highlander of the same era shares the RX400h pack.
Are these packs more expensive?
Yes — 30 prismatic blocks cost more to build than 28 cylindrical modules.