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DiY Grid Charger - Historical

Applied By alftoy: Feb 10, 2022 at 5:54 PM

DiY Grid Charger
For Prius owners that are more hands on with some mechanical skills I thought a page that gathers all links and pages related to building a grid charger is better than me plastering the links on every thread that asks for help related to grid chargers.

WARNING! (SEX)
(Now that I have your attention, please read the next sentences carefully.)


There are dangerous high voltages inside the charger and HV battery. You can be KILLED if you are careless and don't follow the safety instructions while building the charger and even when installing any charging harness.

At the same time, if the battery breaker switch is OFF and you follow the warnings given in this article and in installing the charging harness from installation instructions given from the web, it is quite safe to work on this high voltage system. If you are not comfortable working around high voltage, try to enlist the help of someone that knows what to do. (Also wear latex gloves or 00 safety gloves.)


Lots of education on Priuschat, build one for half the price of a 2008 Prolong harness.

Here is Olrowdy's build for a Honda Insight 175 volts, Prius needs 250 volts using LPC-100-350

Olrowdy.V2.grid.charger.discharger MOD

MparkH documented his Honda build

MparkH V2 Grid Charger Build (Illustrated) | Honda Insight Forum

Prius build using Olrowdy template

Build Hybrid Battery Maintenance Gear For Under $100 | PriusChat

Make your own under $100 or less. $30 for LPC-100-350

Can I borrow your battery charger/balancer/reconditioner? | Page 6 | PriusChat

Lots of discussion for $100 grid chargers.

DIY Grid Reconditioning Charger | PriusChat

DIY harness for DIY charger/discharger | PriusChat