Which is better for a 1/10 RC car?

Both work. The HRB's 100C rating gives more headroom for high-draw setups, but the CNHL's 70C is enough for most stock and mild modified cars. Buy the HRB if you run a hot motor and want two packs.

Is the higher C rating worth it?

Only if your ESC and motor pull big current. A 100C 5000mAh pack claims 500A, far beyond most setups, so the real gain is small. The CNHL at 70C is fine for typical bashers.

Neither is rated for cycle life. Both last longer if you store them at about 3.8V per cell, avoid running below 3.3V per cell, and charge at 1C or less. The lower-stressed 70C CNHL may hold up slightly better in mild use.

Do both fit the same connector?

Yes. Both use an EC5 plug, so either drops into a car or boat wired for EC5. Check your ESC's connector before ordering.

Should I buy two CNHL packs instead of the HRB 2-pack?

Compare the landed price for two CNHL packs against the HRB 2-pack on this page. If the CNHL pair costs less and ships from a local warehouse, it is the better buy for casual running.

Which is better for a boat?

Boats pull sustained current, so the HRB's 100C rating and two-pack value suit them well. Make sure the hull is wired for EC5 and that the pack fits the tray.

HRB 3S 5000mAh Lipo Battery EC5 100C 11.1V RC Lipo Battery (2packs) vs CNHL G+Plus 11.1V 5000mAh 3S Lipo Battery 70C with EC5 Plug

Both are 3S 5000mAh LiPo packs with EC5 plugs, so the choice comes down to discharge rating and pack count. The HRB listing is a 2-pack rated 100C; the CNHL G+Plus is a single pack rated 70C. No prices were given for either, so compare live store prices on this page before buying. Buy the HRB 2-pack if you want two packs and the higher C rating; buy the CNHL if you need one pack and prefer its wider warehouse availability.

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