E-Rickshaw Battery Load Tester 300A 12V (ERLT-300)
For an e-rickshaw driver, range is income — and a 48V or 60V traction pack loses range the moment one 12V block starts to fail. The ERLT-300 puts a real 300 amp fixed load on each block in turn, so you can pinpoint the tired battery in 10 seconds instead of replacing the whole set on a guess.
Product Overview
The ERLT-300 e-rickshaw battery load tester is built for traction packs that get deep-discharged and recharged every single day. It applies a true 300A fixed load to each 12V deep-cycle block, exposing the capacity loss that daily cycling causes in e-rickshaw, e-loader and e-cart batteries long before the driver notices shorter trips.
A 48V, 60V or 72V pack is only as strong as its weakest 12V battery, and in a working e-rickshaw one failing block quietly drags the whole set down. Testing each block on the same 300A load lets a garage or fleet owner swap only the battery that has actually failed — not the entire pack — which is the single biggest saving in daily e-rickshaw running cost.
Why a multimeter is not enough: a battery at rest can read 12.6V and look fine while collapsing the moment current is drawn. The 300A load exposes that hidden weakness.
Choosing the right load for your battery
Rule of thumb: load roughly 3× the battery Ah rating, held for 10 seconds.
| Battery | Ah range | Load needed | Tester |
|---|---|---|---|
| Small / mid car | 30–50 Ah | ~100A | CBLT-100 |
| Large car / SUV | 55–70 Ah | ~200A | 200A tester |
| E-rickshaw / tubular / inverter | 75–200 Ah | ~300A | ERLT-300 — ideal |
| Truck / commercial | 200 Ah+ | up to 450A | BCT-700 HRD |
The ERLT-300's fixed 300A load suits 12V batteries from 75Ah to 200Ah. On smaller batteries a 300A pull is too harsh — choose the 100A or 200A tester instead. Not for lithium (Li-ion / LiFePO₄).
How to use the e-rickshaw battery load tester
Charge and rest
Each 12V unit should read about 12.6–12.8V open-circuit before testing.
Separate the blocks
Remove the links so each 12V block stands alone. Never test a full pack at once.
Apply the 300A load for 10 seconds
Keep terminals clean, clamp firmly, and hold LOAD for a full 10 seconds.
Read the voltage while the load is on
Note the reading at the 10-second mark — that is the block's real health.
Cool down
Allow about 60 seconds before moving to the next block.
Battery health — loaded voltage at 10 seconds
| Loaded voltage | Condition | Action |
|---|---|---|
| 10.0 V and above | Good | Keep in the pack |
| 9.6 – 9.9 V | Acceptable | Serviceable |
| 9.0 – 9.5 V | Weak | Recharge & retest |
| Below 9.0 V | Bad | Replace this block |
Temperature note: the pass threshold sits slightly lower in cold weather and slightly higher in hot weather. Compare blocks at the same temperature.
Specifications
| Model / MPN | ERLT-300 |
|---|---|
| Built for | E-rickshaw, e-loader & e-cart traction packs (daily deep-discharge duty) |
| Test load | 300A fixed — approx. 10 seconds (10s on, ~60s cool) |
| Rated voltage | 12V per block |
| Blocks per pack | 4 × 12V (48V) · 5 × 12V (60V) · 6 × 12V (72V) — test one block at a time |
| Suitable batteries | 75–200 Ah deep-cycle traction / tubular blocks |
| Display | Digital meter |
| Typical users | E-rickshaw drivers, garages & fleet operators |
| Not suitable for | Lithium / LiFePO₄ · two-wheeler (≤35Ah) · full 48V/60V/72V pack at once |
| Price | ₹5,757 (GST included) |
Frequently Asked Questions
Can it test a 48V e-rickshaw pack?
Only one 12V block at a time. Remove the links and test each 12V battery separately. Never apply the tester across a full 48V, 60V or 72V pack.
Which batteries is this for?
12V deep-cycle lead-acid batteries from 75Ah to 200Ah, used in e-rickshaw, tubular, inverter and solar systems. Not for lithium or LiFePO₄, and not for two-wheeler batteries under 35Ah.
How long should I apply the load?
Apply the 300A load for 10 seconds per block. On a 48V pack that is four blocks and on a 60V pack five, so let the tester cool for about 60 seconds between blocks as you work through the set.
How do I read the result?
Read the voltage while the load is still applied, at the 10-second mark. 10.0V and above is good, 9.6–9.9V acceptable, 9.0–9.5V weak (recharge and retest), below 9.0V replace that block.
What is the price and delivery?
₹5,757 with GST included, dispatched from Delhi with free delivery across India in 3–7 business days. Garage, fleet and e-rickshaw dealer discounts are available on bulk orders — ask on WhatsApp.