4 October 2024: Su-vastika — the green-energy startup mentored by Kunwer Sachdev — launches a pocket-sized 1S to 48S Wireless Handheld Cell Voltage Tester, letting anyone measure the health of every cell in a lithium pack over Bluetooth or Wi-Fi.

Grand Newswire / Benzinga carry the product launch: Su-vastika, the Indian green-energy startup mentored by Kunwer Sachdev (founder of Su-Kam), has released a pocket-sized 1S to 48S Handheld Cell Voltage Tester. It measures the voltage of every individual cell inside a lithium battery pack, wirelessly, and hands the user a clear read of overall pack health.
What the tester does
The device works over Bluetooth and Wi-Fi at 1 per cent accuracy, showing exactly how the pack’s BMS is behaving cell by cell. That is the exact number of instruments most lithium buyers have never had access to — you either trusted the vendor’s claims or opened up the pack yourself. Su-vastika’s tester puts a workshop-grade diagnostic into any technician’s pocket.
Why it matters — cell voltage is where packs actually fail
Sachdev’s recurring technical point about lithium is that the number-one reason packs fail is voltage imbalance between cells. A pack looks fine at the terminals and is quietly dying inside. The only real fix is per-cell measurement. A cheap, wireless, handheld version of that measurement changes the economics of maintaining an installed fleet — from EVs to solar-storage setups.
“Developed under the mentorship of Kunwer Sachdev, this Handheld Cell Voltage Tester aims to help maintain peak battery performance by monitoring battery health.”— Su-vastika launch • Benzinga / Grand Newswire, 4 October 2024
Su-vastika’s wider bet
The tester is one piece of a broader Su-vastika thesis: lithium storage is going to displace lead-acid across India’s home and small-business backup market, but only if buyers can trust what they’re paying for. That means honest packs, honest BMS behaviour, and honest diagnostics on both. This launch is the diagnostics piece.
Su-vastika launches 1S–48S Wireless Handheld Cell Voltage Tester — Benzinga →