Exide Start-Stop AGM EK700 battery: complete analysis for car owners

Battery Exide Start-Stop AGM EK700 - this is one of the most popular solutions for modern cars with a system Start-Stop. If your car is equipped with an automatic engine shutdown feature at traffic lights or in traffic jams, a standard lead-acid battery will last a couple of years at most. This is where they come to the rescue AGM technologies, and model EK700 from Exide occupies a leading position in terms of price-quality ratio.

But before buying, it is important to figure out: is this battery suitable for your car? How to use it correctly to extend its service life? And what EK700 different from analogues like Bosch S5 AGM or Varta Silver Dynamic? In this guide, we will analyze in detail the technical characteristics, installation nuances and real reviews from owners - without embellishment or marketing slogans.

Spoiler: if you have a diesel engine with a volume of over 2.5 liters or a gasoline turbo engine, EK700 may be a little weak - but for most sedans and hatchbacks of the class C or D this is the optimal choice. Now let's move on to the details.

Technical characteristics of Exide EK700: what do the numbers hide?

On the box and in catalogs, the manufacturer indicates standard parameters: capacity, starting current, dimensions. But these numbers hide nuances that directly affect the compatibility and longevity of the battery.

Basic parameters Exide EK700:

• 🔋 Capacity: 70 Ah (real - about 68 Ah during tests)
• ⚡ Starting current (EN): 760 A (according to DIN standard - 680 A)
• 📏 Dimensions: 278×175×190 mm (European standard L3)
• ⚖️ Weight: 20.5 kg (30% heavier than conventional batteries)
• 🔄 Service life: up to 4 years with proper use (versus 2 years for standard batteries)

Key Feature: Technology AGM (Absorbent Glass Mat). Unlike classic batteries, where the electrolyte is in a liquid state, here it is absorbed into fiberglass mats. This provides three benefits:

1. Resistance to deep discharges (withstands up to 80% discharge without loss of capacity).
2. Fast charging - restores up to 80% capacity in 30 minutes.
3. Minimal gas emission, which allows the battery to be installed in the cabin (for example, in hybrids).

Important: despite the stated capacity of 70 Ah, the actual output at -18°C drops to 55-60 Ah - this is critical for diesel cars in the northern regions. If you live in harsh winter conditions, consider models with a capacity of 75 Ah or more, e.g. Exide EK800.

Car Compatibility: Will it fit your car?

The manufacturer positions EK700 as a universal solution for cars with the system Start-Stop, but in practice there are limitations. The battery is suitable for:

• 🚗 Gasoline engines volume 1.4–2.0 l (for example, Volkswagen Golf, Skoda Octavia, Ford Focus).
• 🛻Diesels volume up to 1.9 l (for example, Renault Megane dCi, Peugeot 308 BlueHDi).
• 🔌 Hybrids and microhybrids (for example, Toyota Yaris Hybrid, Suzuki SHVS).

But for the following categories EK700 not recommended:

• ❌ Diesels volume over 2.0 l (for example, BMW 520d, Audi A6 2.0 TDI).
• ❌ Turbocharged petrol engines over 2.0 l (for example, Volkswagen Passat 2.0 TSI).
• ❌ Cars with two batteries (for example, Mercedes-Benz S-Class with the system Eco Start-Stop Plus).

⚠️ Attention: If your car has an energy recovery system (for example, Mazda i-Eloop), Exide EK700 may not be able to handle the load. In this case, you need a battery marked EFB or AGM+.

Pros and cons of Exide EK700: honest analysis

Let's look at the real advantages and disadvantages, based on reviews from car owners and independent tests (for example, from ADAC or Auto Bild).

Benefits:

• ✅ Long service life: with proper operation, it lasts 3.5–4 years (versus 1.5–2 years for conventional batteries).
• ✅ Resistance to charge-discharge cycles: withstands up to 300,000 cycles (in the Start-Stop system this is ~3–5 years of driving).
• ✅ Low self-discharge: loses only 3-5% of capacity per month (for classic batteries - 10-15%).
• ✅ Vibration resistance: thanks to AGM technology, it is not afraid of shaking on the roads.

Disadvantages:

• ❌ Overcharge Sensitivity: If the generator produces a voltage above 14.8 V, the battery will degrade in 6–12 months.
• ❌ High price: 2–2.5 times more expensive than standard batteries (from 12,000 to 16,000 rubles in 2026).
• ❌ Difficulties with disposal: AGM batteries cannot be handed over to regular collection points - specialized centers are required.

Step-by-step installation instructions: how not to damage the battery?

Installation Exide EK700 is not much different from installing a conventional battery, but there are critical nuances. Errors at this stage can reduce battery life by 30–50%.

What you will need:

• 🔧 A set of keys (usually 10 mm and 13 mm).
• 🧤 Gloves (although the electrolyte in AGM batteries is bound, it can be dangerous if the case is damaged).
• 🧴 Terminal lubricant (e.g. Liqui Moly Batterie-Pol-Fett).
• 📱 Diagnostic scanner (optional, for resetting errors).

Procedure:

1. Turn off the ignition and remove the key from the lock.
2. Remove the negative terminal, then the positive one (the reverse order may result in a short circuit!).
3. Remove the old battery and clean the seat from dirt and corrosion.
4. Install Exide EK700, secure it with a standard fastener (vibration shortens the service life!).
5. Connect the positive terminal, then the negative one. Tighten to 5–7 Nm.
6. Apply grease to the terminals to protect against oxidation.
7. Reset errors in the control unit (if they appear) via the diagnostic connector.

Make sure the ignition is off|

Check for the absence of active consumers (headlights, radio)|

Prepare tools and a new battery |

Take a photo of the location of the terminals (plus/minus)|

Clean the terminals and seat from oxides -->

⚠️ Attention: After replacing the battery in some vehicles (eg BMW or Audi) required registering a new battery in the control unit. Without this, the Start-Stop system may not work correctly. To register you need a scanner with support OBD-II (for example, Autel MaxiCOM).

Comparison with analogues: Exide vs Bosch vs Varta

Three brands lead the market for AGM batteries for Start-Stop systems: Exide, Bosch and Varta. Let's compare them based on key parameters.

Parameter	Exide EK700	Bosch S5 AGM	Varta Silver Dynamic AGM
Capacity (Ah)	70	70	70
Starting current (EN)	760 A	760 A	800 A
Technology	AGM	AGM	AGM
Warranty	24 months	36 months	24 months
Average price (2026)	13 500 ₽	15 000 ₽	14 500 ₽
Features	Best price-quality ratio	Additional protection against terminal corrosion	Increased vibration resistance

Interesting fact: in tests ADAC 2023 Exide EK700 took second place after Varta Silver Dynamic, second only to inrush current at -20°C. At the same time, the price was 15% cheaper than its analogues.

How to extend the life of Exide EK700: 5 practical tips

AGM batteries are expensive, so it is important to extend their life as much as possible. Here's what really works:

Tip 1. Monitor the on-board voltage

Ideal charging voltage for Exide EK700 — 14.2–14.6 V. If the alternator outputs less than 14.0V, the battery will be chronically undercharged. If it is more than 14.8 V, overcharging and degradation of the plates will begin. You can check the voltage with a multimeter or through a diagnostic scanner (parameter Battery Voltage).

Tip 2: Avoid deep discharges

Despite the AGM's resistance to discharges, the regular voltage drop is lower 11.8 V shortens service life. If you left the car for a long time (more than 2 weeks), disconnect the negative terminal or use supporting charger (for example, CTEK MXS 5.0).

Tip 3. Keep the terminals clean

Oxidation of the terminals increases resistance and degrades charge. Clean them once every 3 months with fine sandpaper and apply a special lubricant. Do not use lithol or grease - they attract dirt.

Tip 4: Check the fastening regularly

Vibration is the main enemy of AGM batteries. Make sure that the battery is firmly secured with the standard mount. If it is missing, buy a universal holder (for example, Hella 8EA 358 531-311).

Tip 5: Use the right charger

For charging Exide EK700 Only devices with the mode are suitable AGM (for example, Optimate 6 or Noco Genius G3500). Charging with a conventional "Chinese" charger will lead to overheating and shortened service life.

What happens if you charge the Exide EK700 with a regular charger?

When using a standard charger (without AGM mode), the voltage may exceed 15 V, which will lead to:

1. Overheating of the electrolyte and deformation of fiberglass mats.

2. Loss of capacity by 20–30% after 3–5 charging cycles.

3. The risk of swelling of the housing and leakage of electrolyte (although it is connected in AGM, leaks are possible in case of critical damage).

Real reviews from owners: first-hand pros and cons

We analyzed reviews on sites Drive2, Auto.ru and YouTube (channels like "Auto electrics for dummies"). Here's what real users say:

Positive Feedback:

• 👍 "Drove 70,000 km in 3 years - battery like nova" (owner Skoda Octavia 1.6 TSI).
• 👍 "Winter -30°C - starts with a half turn" (owner Toyota Corolla 1.8 in Yakutia).
• 👍 "After replacing with Exide EK700, the Start-Stop system began to work 2 times less often" (owner Volkswagen Passat B8).

Negative feedback:

• 👎 "After 1.5 years the housing swelled - it turned out that the generator was producing 15 V" (owner Renault Megane 1.5 dCi).
• 👎 "The dimensions didn't fit - I had to modify the seat" (owner Kia Ceed 1.6 CRDi).
• 👎 "After replacement, error P0562 appeared (low voltage on-board network)" (owner Ford Mondeo 2.0 TDCi).

FAQ: answers to frequently asked questions

❓ Is it possible to install Exide EK700 on cars without a Start-Stop system?

Yes, but it's not practical. AGM batteries are designed for frequent charge-discharge cycles, and in a regular car their potential will not be used. At the same time, the price is 2–3 times higher than that of standard batteries. The exception is if you often drive short distances (up to 5 km) or live in a region with extremely low temperatures.

❓ What is the service life of Exide EK700 in Russian winter conditions?

With proper use and no deep discharges:

• In central Russia (Moscow, St. Petersburg): 3.5–4 years.
• In the northern regions (Murmansk, Yakutia): 2.5–3 years (due to increased cold start load).
• In the southern regions (Krasnodar, Sochi): up to 5 years (due to the absence of extreme temperatures).

The key factor is the condition of the generator and the absence of current leaks in the on-board network.

❓ Do I need to register Exide EK700 in the car control unit?

Yes, for most modern cars (especially VW Group, BMW, Mercedes) registration is required. Without it:

• The Start-Stop system may not work correctly (for example, it turns off after 5 seconds instead of 30).
• An error will appear in the on-board computer Battery Replacement Required.
• The battery will be charged according to the wrong algorithm, which will shorten its service life.

To register, you need a diagnostic scanner with support OBD-II (for example, Launch X431 or Autel MaxiCOM).

❓ Can Exide EK700 be charged with a regular charger?

No! Conventional chargers do not have a mode AGM and can produce voltages higher than 15 V, which will lead to:

• Overheating and deformation of fiberglass separators.
• Loss of capacity by 20–30% after 3–5 charging cycles.
• Risk of case swelling.

Use only chargers with AGM, for example:

• CTEK MXS 5.0 (best option).
• Noco Genius G3500 (with sulfation restoration function).
• Optimate 6 (for long-term storage).

❓ How to dispose of Exide EK700 AGM battery?

AGM batteries cannot be returned to regular lead-acid battery collection points. Disposal options:

• 🔄 Take it to the store when purchasing a new battery (most networks, e.g. "AKB-Energo" or "AutoStandard", they accept old batteries with an additional payment of 500–1000 ₽).
• ♻️ Contact a specialized point (for example, EcoTechnologies or Megon).
• 🚗 Give it to a car service - many workshops accept AGM batteries for further processing free of charge.

It is prohibited to dispose of AGM batteries in a landfill or in containers for household waste - this is a violation of Art. 8.2 of the Code of Administrative Offenses of the Russian Federation ("Non-compliance with environmental requirements").