SOHpro

Blog

Battery health, in plain words

Accessible science, market trends, and practical guides on the one thing that defines an electric's value: its battery health.

BATTERY DEGRADATION — 8-YEAR HORIZON100%90%80%70%012345678YEARS FROM NEWTYPICAL WARRANTY THRESHOLD · 70%100% · year 0P90 · 88%optimisticP50 · 82%most likelyP10 · 74%pessimisticSource: fleet of 22,700 EVs (Geotab 2025) · validated against the SOHpro simulator
Guides

How Much Battery Will You Lose in 8 Years? What an EV Owner Can Actually Expect

The question every EV owner asks sooner or later: how much range am I going to lose over the years? The honest answer comes down to three things — and in Latin America, one of them is simply where you live.

Alonso AguilarAugust 6, 202612 min
VOLTAGE VS CHARGE — WHY LFP DOESN'T FEAR 100%LFP's flat zone0%20%40%60%80%100%STATE OF CHARGEhighlowVOLTAGELFPcharge to 100%nearly flat → the gauge gets confused (error >15%)100% recalibratesNMCclimbs steadily → high SOC ages itVoltage-vs-charge curve (illustrative shape) · LFP's plateau confuses the gauge — accure
Guides

Why does one person swear charging to 100% is fine and another says it kills the battery?

Your neighbor swears he charges to 100% every day with zero problems. The forum says that's exactly how you murder a battery. They can both be right—it comes down to the chemistry inside your EV.

Alonso AguilarAugust 2, 202611 min
HOW IT REALLY AGES — THREE ACTSwarranty floor · 70%ACT 1settling-inACT 2 · THE PLATEAUwhere the car spends almost its whole lifeACT 3much later, below 70%~1–2% a year — slow and predictableIllustrative shape · most EVs spend more than a decade above 70%.
How it works

How Your EV Battery Really Ages (and How Long It Will Last)

The fear says you'll be swapping the battery in a few years. Reality is almost the opposite: it dips a little early on, settles, and outlives the car itself. Here's how degradation actually plays out, year by year.

Alonso AguilarJuly 28, 20269 min
Tendencias
SOHpro
Trends

What Your Insurer Is About to Start Asking For: Battery Health and the Total-Loss Trap

Insurers across the region are figuring out that covering an electric isn't the same as covering a gas car. And the one number they're missing to do it right is, of all things, the health of your battery.

Alonso AguilarJuly 22, 20269 min
For importers
The sale is the beginning,
not the end.

Every VIN you deliver can come back to you: service, referrals and resale.

For importers

Your customer will resell that EV someday — and that's good news for you

For most importers, the sale ends when the car rolls off the lot. For the one who plays the long game, that's exactly where the most valuable asset begins.

Alonso AguilarJuly 16, 20269 min
For importers
Price leveled you.
The battery sets you apart.

Verifiable trust —the sales argument price no longer gives you.

For importers

The battery: the sales argument the EV importer still isn't using

The business of importing EVs has changed: everyone now brings in the same Chinese models at similar prices. The next edge isn't price. It's trust —and there's a hard number behind it.

SOHpro TeamJuly 13, 202610 min
Trends·The region's new mobility
LATAM's electric wave is already, in large part, Chinese.
Uruguay
9 of 10
of new EVs are Chinese brands
Mexico
~70%
BYD
of the EV segment is BYD
Costa Rica
#1
in EV adoption per capita in the region
Sources: El Observador · Tico Times · Mexico Business · 2025
Trends

Chinese EVs in Latin America: good batteries, big warranties—and how to get the most out of both

Chinese brands gave Latin America mass access to electric mobility, with durable LFP chemistry and generous warranties. If you own one, you made a smart buy—here's how to get the most out of that battery and that warranty.

Alonso AguilarJuly 8, 20268 min
GUIDES · HEAT & WEAR IN LATAMWhere it lives decideshow long your battery lastswhere it ages leastMOUNTAINScool · the clock runs slowTEMPERATECOAST · TROPICSsustained heat · the SEI speeds upHeat nearly doubles the aging rate for every ~10 °C (Arrhenius) · ~0.4%/year more in hot climates (Geotab)
Guides

Heat, mountains and fast charging: what really wears out your battery in LATAM

Battery-care guides are almost always written for temperate climates. In Latin America the rules change. Here's what the science actually says speeds up — or slows down — wear in the region.

Alonso AguilarJuly 1, 202611 min
VIN · EV passport ID
WVWZZZE2••••74521
VW ID.4 2022 · 30,600 km
Issued
2024 · Q1
Stamp 01 · 2024
Partner workshop
Origin diagnosis, co-signed
1,200 km
SOH 99.1%
Stamp 02 · 2025
Annual maintenance
Second reading · trend chart starts
16,800 km
SOH 98.2%
Stamp 03 · Today
Current visit
Consolidated SOHpro Score
30,600 km
SOH 97.0%
Stamp N · Future
Next owner
Automatic transfer at resale
VIN-locked
· VIN-LOCKED· CO-SIGNED BY PARTNER WORKSHOP· INDEPENDENT
Guides

The first scan: why your brand-new EV needs a passport too

The best moment to start your electric's passport isn't the day you sell it. It's the day they hand you the keys — and the degradation curve explains exactly why.

Alonso AguilarJune 25, 20268 min
A BATTERY DOESN'T HAVE ONE CLOCK — IT HAS TWO+add upCLOCK 1 · CALENDARruns with time + heatCLOCK 2 · CYCLESruns with use + charging
How it works

The two clocks of aging: why your battery gets older even when you don't use it

A battery ages two ways at once: by the calendar and by the use. The electrochemistry of the two clocks explains why tropical heat weighs as heavily as the miles —and why extreme cold does damage too.

Alonso AguilarJune 20, 202610 min
Trends
The odometer had
a good century.

For the electric, it's no longer the number that says what it's worth.

Trends

SOH is the new mileage: why the odometer no longer tells you what an EV is worth

Two identical EVs, the same 30,000 km, and thousands of dollars apart. The reason is the one thing the odometer can't see: the health of the battery.

Alonso AguilarJune 13, 20268 min
How it works · no hardware
No boxes, no cables.

We don't mail you a gadget. SOHpro reads the diagnostic your shop already generates —a photo of the screen, a PDF, a CSV— and turns it into a score that lives on the VIN.

FOTOPDFCSV
SOHpro AI reads and normalizes it
Read from a photo · no hardware
SOHpro Score
Predictive signals from the pack
Excellent
Your battery is in excellent shape. Rest easy.

Carry on. Next check at your regular maintenance.

Based on 5 health indicators
How it works

No boxes, no cables: how SOHpro pulls a score from a photo of your scanner

Most battery-health solutions mail you an OBD box. SOHpro does something different: it reads the diagnostic your shop already generates. Here's how —and why that fits Latin America.

SOHpro TeamJune 9, 202611 min
Score breakdown
4 / 5 measured
4 of 5 health indicators measured · the confirmed ones count toward the score
Reported health43%
97%
Cell balance22%
8 mV
Degradation rate20%
0.13%/1k km
Voltage-SOC check5%
12 mV dev
Uniform temperature5%
1.0°C spread
How it works

Anatomy of a score: how battery health is really measured

A single number from the BMS can fool you. We pop the hood on the SOHpro Score and show the six signals — and the electrochemistry behind each one — you have to cross-check to know whether a battery is truly healthy.

Alonso AguilarJune 3, 202611 min
Outside
0 visible damage

Flawless
on the outside.

Bodywork without a mark. The visual inspection passes it.

Inside — the BMS reading

The battery doesn't lie.

The impact left no trace on the panels, but it did inside: two cells lost their voltage balance, and the temperature gives them away.

Voltage map · 96 cells · 2 critical
MIN3.52AVG3.91MAX3.94
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
HealthyOperationalBorderlineCritical
Thermal sensor
Cell 7 · 58 °C
SOHpro · post-impact diagnostic · the weak link
Guides

Salvage, flood cars and lemons: how to buy a used electric without surprises

The used-electric market is filling up, and not everything that shines is healthy. The science of why a battered or flooded battery can't be dressed up — and how to keep it from following you home.

SOHpro TeamMay 28, 20269 min