Tata replaces my Nexon EV's battery pack with a faulty refurbished unit

I have encountered the "HV system fault" issue a few times: at around 7-8% charge after charging to 100% at home using AC, and at 17% charge when using DC fast chargers.

BHPian vatsal_makadia recently shared this with other enthusiasts.

I own a Nexon EV Max, purchased on June 14, 2022, from the first batch of Nexon EV Max as informed by my car Relationship Manager at TATA Surat, Gujarat.

I have driven a total of 59,000 kilometers over 2 years and 1 month.

I have encountered the "HV system fault" issue a few times: at around 7-8% charge after charging to 100% at home using AC, and at 17% charge when using DC fast chargers.

Upon reporting this issue to the workshop, they immediately acknowledged it and requested that I hand over the car for 3-4 days without asking for additional proof or questions, implying they were aware of the problem's commonality.

Yesterday afternoon, I gave them the car, and today I was informed that TATA AUTOCOMP engineers inspected the battery and decided to replace the entire battery pack.

I will be collecting the car today, and the new battery pack is expected to arrive from Pune within 10-15 days

Here's what BHPian Sridhar_CE had to say on the matter:

As a fellow EV max owner, I wonder if Tata Motors will replace your battery with a brand new one or a refurbished one?

Here's what BHPian KeepItSimple had to say on the matter:

The end user is not likely to be able to make out the difference.

Tata must be having a steady supply of recyclable batteries with some internal arrangement with the supplier.

If this was not so, they would be dragging their feet on battery replacement.

BHPian vatsal_makadia replied:

The battery they replaced is a refurbished battery, not a new one.

My EV max battery was replaced in about 56,000 km. With the 'new' refurbished battery range has improved, may be my original battery never worked to 100% capacity.

Well, not OK now after driving it till 5%.

Same issue even after battery replacement.

Since this can come at any SOC 0%-20% I cannot ignore it.

Upon intimating TATA service incharge, they have committed to resolve this issue anyhow.

Read BHPian comments for more insights and information.