Hybrid battery repair for Lexus GS450H

Simon Trundle · May 25, 2022

If anyone has like me seen the dreaded warning that the hybrid Battery has failed then I strongly recommend they contact Hybrid Battery repair services (www.hybridbatteryrepairservice.co.uk) and speak to Mark. Not only is he very knowledgeable on all types of hybrid Battery systems he offers to collect your Battery and carry out a condition analysis to identify what cells are failing and replaces these before reconditioning the entire hybrid Battery and then gives you a 12 month warranty. Lexus main dealer quoted over £3,200 for replacing the Battery whereas Mark managed to repair and recondition for well less than half the main dealer estimate. I cannot recommend this company enough for their great service and knowledge.

royoftherovers · May 25, 2022

who are they?

where are they?

are they Members?

who are you ?

An unusual first post.

PDM · May 25, 2022

1 hour ago, royoftherovers said:

who are they?

where are they?

are they Members?

who are you ?

An unusual first post.

I thought the web link given (www.hybridbatteryrepairservice.co.uk) might have some answers, John, but it's not working.

Simon - is this the correct address?

Paul

Nico72 · May 31, 2022

On 5/25/2022 at 10:41 AM, royoftherovers said:

who are they?

where are they?

are they Members?

who are you ?

An unusual first post.

I agree with you John and no response since is a bit too good to be true to believe. The website link as someone said is still not working...

Malc · May 31, 2022

for those interested in hybrid Battery repairs . I do recollect here somewhere a piece identifying a well versed and contactable Hybrid Battery repair business

It might have been mentioned long back in my much earlier post somewhere thinking about the comparisons twixt the Ls400 -430-460- and 600 and the batteries costing a staggering £15k maybe

I didn't take too much notice of it as I'm firmly just old school 4ltr V8 petrol with an emissions scandal going on right now :whistling:

Malc

Shahpor · May 31, 2022

I believe Richard does hybrid Battery repairs:

https://www.lexusownersclub.co.uk/profile/51991-hybridbatterysolutions/

Although apologies to @hybridbatterysolutions if I am mistaken! 🙂

royoftherovers · May 31, 2022

Thanks Shahpor.

I have been on the road for the past 4 days driving back to UK and have not logged on during that time.

Richard is a valued Member of the Forum.

royoftherovers · May 31, 2022

51 minutes ago, Malc said:

for those interested in hybrid battery repairs . I do recollect here somewhere a piece identifying a well versed and contactable Hybrid Battery repair business

It might have been mentioned long back in my much earlier post somewhere thinking about the comparisons twixt the Ls400 -430-460- and 600 and the batteries costing a staggering £15k maybe

I didn't take too much notice of it as I'm firmly just old school 4ltr V8 petrol with an emissions scandal going on right now

Malc

Twas me oh Lord Malc of the Manor !

hybridbatterysolutions · July 7, 2022

Hi fellas - yes I am still doing my thing. Thanks Richard

hazelnut · August 27, 2023

Hi Richard,

Are you still doing Battery refurbs? I just extracted my GS450h Battery, and I seem to have multiple dead modules. eBay has 'used' modules for between £22 and £30, but if I need all 40 that is going to cost a packet!

I have hunted for a module re-conditioner similar to ones used on Youtube, but I have come up empty. I guess if I have to I'll build my own. I am electronics engineer after all.

hybridbatterysolutions · August 27, 2023

9 hours ago, hazelnut said:

Hi Richard,

Are you still doing battery refurbs? I just extracted my GS450h battery, and I seem to have multiple dead modules. eBay has 'used' modules for between £22 and £30, but if I need all 40 that is going to cost a packet!

I have hunted for a module re-conditioner similar to ones used on Youtube, but I have come up empty. I guess if I have to I'll build my own. I am electronics engineer after all.

Yes I am still doing my thing, what exactly are you after?

hazelnut · August 27, 2023

I might need 40 Battery blades. So far my blades are from 0.125 Ah to 1.400 Ah. They should be 6.5 Ah .

hybridbatterysolutions · August 27, 2023

Yes not good, what minimum capacity range would you like

hazelnut · August 27, 2023

I could probably live with 1 mile. How many Wh per mile? 400 ? Lexus quotes 6.5A at 288V = 1.875 KWh is that good for 5 miles? I could live with all the packs at 1400mAh.

hazelnut · August 29, 2023

I would like to get this sorted soon if possible. I have found these guys in Exeter hybrid.repair.service on eBay

I asked them how much for 40 modules, and what sort of Ah I could expect for the quoted price.

hazelnut · August 29, 2023

I called the local dealer a new HV Battery is £4984.97 + VAT !

(But it can be as little as £3436 inc VAT with old unit exchanged)

I tested 3 more modules: 1.9Ah, 1.6Ah and 1.5Ah.

hazelnut · August 29, 2023

Has anyone had any dealings with Home - Hybrid Battery Repair located in Glasgow ?

hazelnut · August 31, 2023

On 8/29/2023 at 1:30 PM, hazelnut said:

Has anyone had any dealings with Home - Hybrid Battery Repair located in Glasgow ?

So decided to go with this guy for a set of 'B' rated cell blades, so around 4.5Ah each, which should last long enough for my purposes.

Hybrid Repair Service · January 1

On 5/25/2022 at 10:09 AM, Simon Trundle said:

If anyone has like me seen the dreaded warning that the hybrid Battery has failed then I strongly recommend they contact Hybrid Battery repair services (www.hybridbatteryrepairservice.co.uk) and speak to Mark. Not only is he very knowledgeable on all types of hybrid Battery systems he offers to collect your Battery and carry out a condition analysis to identify what cells are failing and replaces these before reconditioning the entire hybrid Battery and then gives you a 12 month warranty. Lexus main dealer quoted over £3,200 for replacing the Battery whereas Mark managed to repair and recondition for well less than half the main dealer estimate. I cannot recommend this company enough for their great service and knowledge.

Hi the actual website is https://www.hybridrepairservice.co.uk The company is the Institute of the Motor Industry TechSafe certified and is fully insured to carry out hybrid Battery system repair.

hybridbatterysolutions · March 9

As am I to level 4

hazelnut · April 19

Some time later...I did end up rebuilding the Battery in my 2006 GS450h with the 'B' cell set. But sadly the engine had a timing failure. About six months later my 2009 GS450h HV Battery failed, as always seems to happen the middle cells of the pack read very low. So the question is can I simply swap the 2006 pack into the 2009 ? Or do I have to tear them both down and swap the BMS box as well ? Both HV assemblies have the same Toyota/Lexus part number.

hazelnut · April 30

Today I swapped the 2006 HV Battery into the 2009 GS450h. Good news is there was no weird firmware rejection issue. However, a few miles down the road on the way to the MOT the dreaded engine light came on. After a small moment of quiet contemplation I hooked up my laptop and Techstream. With the car running my V17 Battery Block had been recorded as "Minimum Batt Block No" with "Batt Block Minimum Vol" around 15 Volts, when all the other Blocks are very close to 16.70 Volts. But the V17 Block was reading fine. I kept looking, and then suddenly the V17 voltage dropped to 15.50 Volts, then about 30 seconds later returned up to 17.2V being the highest in the pack. Anyone seen this odd behaviour?

PS. here is my working theory. 1) Assume all the Blocks are OK. 2) assume V17 wiring loom is dodgy. If the loom connection is faulty, and the BMS has some kind of balancing resistors it can switch in, then a high voltage in V17 would trigger the balancing resistor to be engaged, but this drops the observed voltage as the loom is a bit dodgy. This would explain the sudden change between the two voltages seen.