Plug-in Hybrid Conversions

HCEV is proud to offer complete, high-quality PHEV conversions. The following conversion systems are currently available for the 2004-2009 Prius:

Product Comparison

  5 kW-hr Lead Acid 4 kW-hr LiFePO4 10.5 kW-hr LiFePO4
Vehicle 2004–2009 Toyota Prius
Complete, Tested Conversion System Yes Yes Yes
Strong Steel Enclosure Yes Yes Yes
EV Range 10-15 miles 20+ miles 35-40 miles
Max. Speed in EV Mode 52 MPH 52 MPH 52 MPH
Battery Chemistry Lead Acid LiFePO4 LiFePO4
Battery Capacity 5 kW-hr 4 kW-hr 10 kW-hr
Battery Life 2 years Life of the vehicle
Batteries 20 19 76
Battery Voltage 256 VDC 243 VDC 258 VDC
Charge Time
(@ 110 VAC/15A)
3 hours 5 hours
Fast charge capable
8 hours
Fast charge capable
System Weight 360 lbs. 140 lbs. 330 lbs.
Vehicle Spring Upgrade Required Optional Required
Mounting Location Under rear cargo deck, on top of spare tire Under rear cargo deck
Spare Tire Access Battery box lifts up on springs to access spare tire No
Warranty* 3 year limited warranty 3 year limited warranty 3 year limited warranty
Price+ $4,995 $8,495 $11,995
Which one is
right for me?
Most affordable way to get a plug-in hybrid Less weight, longer battery life than PbA Maximum EV range
 
 
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The lead acid system is also available without batteries.

Lead Acid to Lithium Iron Phosphate Upgrade

The lead acid and 4 kW-hr lithium iron phosphate systems use the same enclosure. If you already own a lead acid system you can upgrade it to the 4 kW-hr lithium iron phosphate pack without replacing the entire system. The lead acid to 4 kW-hr lithium iron phosphate upgrade is available for $3,995.+

* Warranty covers all components except batteries. Batteries are covered by battery manufacturer warranty, typically 1 year.
+ Price does not include shipping or installation.